friction vs abrasion

friction and abrasion both are nouns.

Word	Noun	Adjective	Verb	Adverb
friction	Yes	No	No	No
abrasion	Yes	No	No	No

As nouns, abrasion is a hyponym of friction; that is, abrasion is a word with a more specific, narrower meaning than friction:

friction: the resistance encountered when one body is moved in contact with another
abrasion: the wearing down of rock particles by friction due to water or wind or ice

Other hyponyms of friction include attrition, detrition, grinding, adhesive friction, grip, traction.

friction (noun)	abrasion (noun)
effort expended in moving one object over another with pressure	the wearing down of rock particles by friction due to water or wind or ice
the resistance encountered when one body is moved in contact with another	erosion by friction
a state of conflict between persons	an abraded area where the skin is torn or worn off