cockpit locker vs footlocker

cockpit locker and footlocker both are nouns.

Word	Noun	Adjective	Verb	Adverb
cockpit locker	Yes	No	No	No
footlocker	Yes	No	No	No

As nouns, footlocker is a hypernym of cockpit locker; that is, footlocker is a word with a broader meaning than cockpit locker:

cockpit locker: (nautical) a large locker under the cockpit seating.
footlocker: a trunk for storing personal possessions; usually kept at the foot of a bed (as in a barracks)

Other hypernyms of cockpit locker include locker.

cockpit locker (noun)	footlocker (noun)
(nautical) a large locker under the cockpit seating.	a trunk for storing personal possessions; usually kept at the foot of a bed (as in a barracks)