Claim-Assert | Commonly Confused Words

Claim

/kleɪm/

To state that something is true, often without providing evidence.

She claimed the little red "dolls" had saved her life.Who claims "divine right" plays with the lightning.All the magazines were claiming him.

This word has no antonyms

/əˈsɜːt/

To state something strongly and clearly, usually with confidence.

I never before asserted myself so against them."Yes, you did, too," the other asserted warmly.I assert it.

Claim often implies an assertion or statement that might require proof, while assert indicates stating something confidently and forcefully.
Think of assert as taking a strong stance, whereas claim can be seen as making a declaration that others may doubt.
Claim is commonly used when someone is presenting a point that is debatable, while assert suggests confidence and authority behind the statement.