plumed vs crested

plumed and crested both are adjectives.

Word	Noun	Adjective	Verb	Adverb
plumed	No	Yes	No	No
crested	No	Yes	No	No

As adjectives, plumed and crested are synonyms defined as:

plumed (adjective)	crested (adjective)
(of a knight's helmet) having a decorative plume	(of a knight's helmet) having a decorative plume
having an ornamental plume or feathery tuft	(of a bird or animal) having a usually ornamental tuft or process on the head; often used in combination
having or covered with or abounding in plumes	bearing an heraldic device