tug vs strive

tug is a noun but strive is not a noun.

Word	Noun	Adjective	Verb	Adverb
tug	Yes	No	Yes	No
strive	No	No	Yes	No

As verbs, strive is a hyponym of tug; that is, strive is a word with a more specific, narrower meaning than tug:

Other hyponyms of tug include reach, strain.

tug (noun)	strive (noun)
a sudden abrupt pull
a powerful small boat designed to pull or push larger ships

tug (verb)	strive (verb)
struggle in opposition	to exert much effort or energy
pull hard	attempt by employing effort
pull or strain hard at
move by pulling hard
carry with difficulty
tow (a vessel) with a tug
strive and make an effort to reach a goal