seek vs grub

seek and grub both are nouns.

Word	Noun	Adjective	Verb	Adverb
seek	Yes	No	Yes	No
grub	Yes	No	Yes	No

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

seek (noun)	grub (noun)
the movement of a read/write head to a specific data track on a disk	a soft thick wormlike larva of certain beetles and other insects
	informal terms for a meal

seek (verb)	grub (verb)
inquire for	search about busily
try to locate or discover, or try to establish the existence of	ask for and get free; be a parasite
go to or towards
try to get or reach
make an effort or attempt