fine-tooth comb vs fine-toothed comb

fine-tooth comb and fine-toothed comb both are nouns.

Word	Noun	Adjective	Verb	Adverb
fine-tooth comb	Yes	No	No	No
fine-toothed comb	Yes	No	No	No

As nouns, fine-tooth comb and fine-toothed comb are synonyms defined as:

fine-tooth comb and fine-toothed comb: a method of examining in minute detail

As nouns, fine-tooth comb and fine-toothed comb are synonyms defined as:

fine-tooth comb and fine-toothed comb: a comb with teeth set close together

fine-tooth comb (noun)	fine-toothed comb (noun)
a method of examining in minute detail	a method of examining in minute detail
a comb with teeth set close together	a comb with teeth set close together