The difference between Brawler and Rooster

Brawler as a noun:

One who brawls, engages in noisy, unseemly fights.

Brawler as a noun (video games, informal):

A beat 'em up game.

Rooster as a noun (US, Kent, Australia, NZ):

A male domestic chicken () or other gallinaceous bird.

Rooster as a noun:

A bird or bat which roosts or is roosting.

Rooster as a noun (figuratively, obsolete, _, slang):

An informer.

Rooster as a noun (figuratively, obsolete, _, slang):

A violent or disorderly person.

Rooster as a noun (figuratively):

A powerful, prideful, or pompous person.

Rooster as a noun (figuratively, originally, _, US, _, slang, now, _, chiefly, _, NZ):

A man.

Rooster as a noun (regional, _, US, historical):

A wild violet, when used in a children's game based on cockfighting.

Rooster as a noun (obsolete, _, US, _, slang):

Legislation solely devised to benefit the legislators proposing it.