tearing vs activity

tearing and activity both are nouns.

Word	Noun	Adjective	Verb	Adverb
tearing	Yes	Yes	No	No
activity	Yes	No	No	No

As nouns, activity is a hypernym of tearing; that is, activity is a word with a broader meaning than tearing:

Other hypernyms of tearing include bodily function, bodily process, body process.

tearing (noun)	activity (noun)
shedding tears	any specific behavior
	the trait of being active; moving or acting rapidly and energetically
	an organic process that takes place in the body
	a process existing in or produced by nature (rather than by the intent of human beings)
	the state of being active
	(chemistry) the capacity of a substance to take part in a chemical reaction

tearing (adjective)	activity (adjective)
marked by extreme intensity of emotions or convictions; inclined to react violently; fervid