wall vs building

wall and building both are nouns.

Word	Noun	Adjective	Verb	Adverb
wall	Yes	No	Yes	No
building	Yes	No	No	No

wall (noun)	building (noun)
an architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure	the act of constructing something
an embankment built around a space for defensive purposes	the commercial activity involved in repairing old structures or constructing new ones
a masonry fence (as around an estate or garden)	a structure that has a roof and walls and stands more or less permanently in one place
a layer of material that encloses space	the occupants of a building
(anatomy) a layer (a lining or membrane) that encloses a structure
anything that suggests a wall in structure or function or effect
a vertical (or almost vertical) smooth rock face (as of a cave or mountain)
a difficult or awkward situation

wall (verb)	building (verb)
surround with a wall in order to fortify