tufted vs crested

tufted and crested both are adjectives.

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

As adjectives, tufted and crested are synonyms defined as:

tufted and crested: (of a bird or animal) having a usually ornamental tuft or process on the head; often used in combination

Other synonyms of tufted include topknotted.

tufted (adjective)	crested (adjective)
having or adorned with tufts	(of a knight's helmet) having a decorative plume
(of plants) growing in small dense clumps or tufts	(of a bird or animal) having a usually ornamental tuft or process on the head; often used in combination
(of a bird or animal) having a usually ornamental tuft or process on the head; often used in combination	bearing an heraldic device