friction vs effort

friction and effort both are nouns.

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

As nouns, effort is a hypernym of friction; that is, effort is a word with a broader meaning than friction:

Other hypernyms of friction include elbow grease, exertion, sweat, travail.

friction (noun)	effort (noun)
effort expended in moving one object over another with pressure	earnest and conscientious activity intended to do or accomplish something
the resistance encountered when one body is moved in contact with another	use of physical or mental energy; hard work
a state of conflict between persons	a notable achievement
	a series of actions advancing a principle or tending toward a particular end