dig up vs grub out

dig up and grub out both are verbs.

Word	Noun	Adjective	Verb	Adverb
dig up	No	No	Yes	No
grub out	No	No	Yes	No

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

Other hyponyms of dig up include grub up, nuzzle, disinter, exhume.

dig up (verb)	grub out (verb)
find by digging in the ground	dig up
remove, harvest, or recover by digging