subtweeting vs human action

subtweeting and human action both are nouns.

Word	Noun	Adjective	Verb	Adverb
subtweeting	Yes	No	No	No
human action	Yes	No	No	No

As nouns, human action is a hypernym of subtweeting; that is, human action is a word with a broader meaning than subtweeting:

subtweeting: the act of tweeting without tagging a user so that they will not see the post
human action: something that people do or cause to happen

Other hypernyms of subtweeting include act, deed, human activity.

subtweeting (noun)	human action (noun)
the act of tweeting without tagging a user so that they will not see the post	something that people do or cause to happen