What's another word for a claim?

Another word for a claim depends on context, as claim can mean assertion, demand, or insurance claim. For claim meaning assertion or statement that something is true, synonyms include assertion, statement, allegation, declaration, contention, argument, affirmation, and proposition, for example he made claim that product works, could say he made assertion. For claim meaning demand for something due, synonyms include demand, request, application, petition, and entitlement, for example claim for refund could be called demand for refund. For legal claim, another word is lawsuit, case, or cause of action. For insurance claim, another word is request for compensation or filing. For claim meaning to take ownership, another word is stake a claim, assert ownership. For example, instead of saying make a claim, you could say make an assertion or file a demand. In academic context, claim as thesis, another word is argument. So another word for claim is assertion as most common synonym for statement, and demand for request for something, choosing based on whether claim is about stating fact or demanding something. For instance, insurance claim could be called compensation request, while claim that HEPA filtration works could be called assertion that HEPA filtration works.