seek vs pursue

seek is a noun but pursue is not a noun.

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

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

seek (noun)	pursue (noun)
the movement of a read/write head to a specific data track on a disk

seek (verb)	pursue (verb)
inquire for	go in search of or hunt for
try to locate or discover, or try to establish the existence of	follow in or as if in pursuit
go to or towards	carry out or participate in an activity; be involved in
try to get or reach	carry further or advance
make an effort or attempt