man-made fiber vs synthetic fiber

man-made fiber and synthetic fiber both are nouns.

Word	Noun	Adjective	Verb	Adverb
man-made fiber	Yes	No	No	No
synthetic fiber	Yes	No	No	No

As nouns, man-made fiber and synthetic fiber are synonyms defined as:

man-made fiber and synthetic fiber: fiber created from natural materials or by chemical processes

man-made fiber (noun)	synthetic fiber (noun)
fiber created from natural materials or by chemical processes	fiber created from natural materials or by chemical processes