forefront vs cutting edge

forefront and cutting edge both are nouns.

Word	Noun	Adjective	Verb	Adverb
forefront	Yes	No	No	No
cutting edge	Yes	No	No	No

As nouns, forefront and cutting edge are synonyms defined as:

forefront and cutting edge: the position of greatest importance or advancement; the leading position in any movement or field

Other synonyms of forefront include vanguard.

forefront (noun)	cutting edge (noun)
the position of greatest importance or advancement; the leading position in any movement or field	the sharp cutting side of the blade of a knife
the part in the front or nearest the viewer	the position of greatest importance or advancement; the leading position in any movement or field