fiber vs material

fiber and material both are nouns.

Word	Noun	Adjective	Verb	Adverb
fiber	Yes	No	No	No
material	Yes	Yes	No	No

As nouns, material is a hypernym of fiber; that is, material is a word with a broader meaning than fiber:

fiber: a leatherlike material made by compressing layers of paper or cloth
material: artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers

Other hypernyms of fiber include cloth, fabric, textile.

As nouns, material is a hypernym of fiber; that is, material is a word with a broader meaning than fiber:

fiber: a slender and greatly elongated substance capable of being spun into yarn
material: the tangible substance that goes into the makeup of a physical object

Other hypernyms of fiber include stuff.

fiber (noun)	material (noun)
a leatherlike material made by compressing layers of paper or cloth	artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers
the inherent complex of attributes that determines a persons moral and ethical actions and reactions	things needed for doing or making something
any of several elongated, threadlike cells (especially a muscle fiber or a nerve fiber)	information (data or ideas or observations) that can be used or reworked into a finished form
coarse, indigestible plant food low in nutrients; its bulk stimulates intestinal peristalsis	a person judged suitable for admission or employment
a slender and greatly elongated substance capable of being spun into yarn	the tangible substance that goes into the makeup of a physical object

fiber (adjective)	material (adjective)
	derived from or composed of matter
	directly relevant to a matter especially a law case
	having substance or capable of being treated as fact; not imaginary
	having material or physical form or substance
	concerned with or affecting physical as distinct from intellectual or psychological well-being
	concerned with worldly rather than spiritual interests