stowage vs strongroom

stowage and strongroom both are nouns.

Word	Noun	Adjective	Verb	Adverb
stowage	Yes	No	No	No
strongroom	Yes	No	No	No

As nouns, strongroom is a hyponym of stowage; that is, strongroom is a word with a more specific, narrower meaning than stowage:

Other hyponyms of stowage include chandlery, lumber room, buttery, larder, pantry, stock room, stockroom.

stowage (noun)	strongroom (noun)
the act of packing or storing away	a burglarproof and fireproof room in which valuables are kept
a room in which things are stored
the charge for stowing goods