storage room vs larder

storage room and larder both are nouns.

Word	Noun	Adjective	Verb	Adverb
storage room	Yes	No	No	No
larder	Yes	No	No	No

As nouns, larder is a hyponym of storage room; that is, larder is a word with a more specific, narrower meaning than storage room:

Other hyponyms of storage room include chandlery, lumber room, buttery, pantry, stock room, stockroom, strongroom.

storage room (noun)	larder (noun)
a room in which things are stored	a small storeroom for storing foods or wines
	a supply of food especially for a household