building supply house vs building supply store

building supply house and building supply store both are nouns.

Word	Noun	Adjective	Verb	Adverb
building supply house	Yes	No	No	No
building supply store	Yes	No	No	No

As nouns, building supply house and building supply store are synonyms defined as:

building supply house and building supply store: a store where builders can purchase materials for building houses and related structures

building supply house (noun)	building supply store (noun)
a store where builders can purchase materials for building houses and related structures	a store where builders can purchase materials for building houses and related structures