A hypothesis is a:

Concept

A hypothesis is a tentative supposition or proposition framed so that evidence can test it.

It guides inquiry while remaining open to confirmation, revision, or rejection.

Application

Here, “supposition” is the closest category because it denotes an idea provisionally assumed for investigation.

Contrast

• A law summarizes a well-established regularity.

• A canon is an accepted rule or authoritative principle.

• A postulate is accepted as a starting premise without requiring proof within a system.

• A supposition is a tentative assumption considered for testing.

Result

Therefore, a hypothesis is a supposition.