lubricate vs fill up

lubricate and fill up both are verbs.

Word	Noun	Adjective	Verb	Adverb
lubricate	No	No	Yes	No
fill up	No	No	Yes	No

As verbs, fill up is a hypernym of lubricate; that is, fill up is a word with a broader meaning than lubricate:

Other hypernyms of lubricate include fill, make full.

lubricate (verb)	fill up (verb)
make slippery or smooth through the application of a lubricant	make full, also in a metaphorical sense
apply a lubricant to	become full
have lubricating properties	eat until one is sated
	fill or stop up