striker vs bluejacket

striker and bluejacket both are nouns.

Word	Noun	Adjective	Verb	Adverb
striker	Yes	No	No	No
bluejacket	Yes	No	No	No

As nouns, bluejacket is a hypernym of striker; that is, bluejacket is a word with a broader meaning than striker:

Other hypernyms of striker include navy man, sailor, sailor boy.

striker (noun)	bluejacket (noun)
the part of a mechanical device that strikes something	a serviceman in the navy
an employee on strike against an employer
someone receiving intensive training for a naval technical rating
a forward on a soccer team
someone who hits