Online casino terms: a guide to commonly confused pairs

How to use this paired dictionary

This guide groups terms by the confusion they cause. A reader can find one distinction without reading a whole technical manual.

Start with the complete phrase and its location. That means account history, game rules, a help article or a promotion.

Keep the unit attached. “Twenty credits” is incomplete without the stated credit value; “a return of eight” is incomplete without the currency and whether it includes the stake.

The examples here are invented to explain language, not records of casino testing.

For help with gambling itself, GamCare lists its current contact options. Use the service details that apply where you live.

Sources: GamCare support contacts.

Deposit / stake: money added and money wagered

A deposit adds money to an account. A stake is money committed to a particular wager. They can have the same amount, but that does not make them the same transaction.

Use the diagram’s invented cash-only example. An account starts at zero, receives £20 and then places one £5 wager. The deposit is £20, the stake is £5 and £15 remains unplayed.

Return / net profit: check whether the stake is included

In the illustrated example, “return” means the settlement amount including the original stake. A £5 wager with an £8 return therefore produces £3 net profit on that wager. Add the £8 settlement to the £15 that was not wagered and the closing account balance is £23.

Return is not the same as profit examines this distinction on its own. Before copying a displayed “win”, check the product’s explanation of that label. Keep a wager result separate from an account balance, and keep both separate from a withdrawal.

RTP / session result: a percentage is not a repayment promise

Return to player, abbreviated RTP, concerns the share of stakes returned over a long run of plays under the game’s conditions. William Hill’s help article explicitly distinguishes that percentage from what an individual play or series of plays returns. This is a documented terminology example from an operator, not an assessment of its service.

A session result describes an observed period of play. It can be written as amounts and timestamps without calling it a measured long-run RTP. If you are reviewing a screenshot, copy the actual label rather than expanding an unexplained percentage into a performance claim.

Sources: William Hill: what RTP means.

RNG / mapping: a number and its game meaning

A random number generator, or RNG, produces numbers intended to have statistical randomness. Mapping uses an RNG result to select a game outcome. Scaling converts an output into the range required by a product.

An RNG is one part of a game gives a focused introduction to those stages. When collecting information, write the claim beside its evidence: a game-rules passage, provider documentation or relevant testing information. Avoid expanding a narrow statement about randomness into a claim about withdrawals, support or the accuracy of every page on a casino site.

Sources: Gambling Commission: technical standards definitions.

Provider / operator: identify the role behind the name

“Provider” commonly points to the business supplying a game or related software; “operator” points to the business providing the gambling service. Treat these as roles to investigate, rather than assuming every logo names the same counterparty. A game credit and an account-terms footer may identify different businesses.

The Gambling Commission’s software guidance separates permission to manufacture, supply, install or adapt gambling software from permission to provide gambling facilities. That distinction explains why evidence about a software business cannot simply be transferred to a casino account relationship.

Sources: Gambling Commission: what is gambling software?.

Demo / bonus: the word free does not settle the context

In the technical glossary, play-for-free is a demonstration without money or money’s worth staked or won. A promotional bonus is a separate offer whose conditions must be read. Do not treat a pretend demo balance as withdrawable cash or assume an offer’s “free” label means it has the same status as demonstration play.

RTS 6 addresses how same-website demonstrations represent corresponding money games. Its guidance separately discusses supplier demonstrations designed to show bonus features. Those contexts matter when interpreting a feature video or demonstration page; seeing an exciting sequence does not establish its frequency in ordinary play.

Sources: Gambling Commission: technical standards definitions; Gambling Commission: RTS 6, play-for-free games.

Game / round / session: keep the boundary attached

In ordinary interface reading, a game title identifies the product and a round identifies a unit of play under its rules. A session groups play within a defined boundary. The RTS glossary’s gaming session starts with real-money play and ends on exiting a game; a different report may use a separately documented counting method.

Keep the recorded event and its definition together before counting it.

Sources: Gambling Commission: technical standards definitions.

Progressive / fixed: a prize amount and a prize mechanism

A progressive jackpot accumulates contributions from stakes above a starting value. A fixed prize uses an amount or payout rule set for the stated game conditions; “fixed” need not mean the same cash sum at every stake. Neither label by itself tells you the chance of receiving the prize.

RTS 9’s jackpot guidance names the information to look for. It covers funding, eligibility and how awards are determined. Those are useful reading prompts.

A large number on a banner leaves those questions unanswered. A changing displayed value does not identify a trigger rule by itself.

To apply a definition, compare it with the game’s rules or a saved account record. If it remains unclear, ask the operator to identify the relevant rule or help page.

Sources: Gambling Commission: technical standards definitions; Gambling Commission: RTS 9, progressive jackpots.