wall vs coping

wall and coping both are nouns.

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

wall (noun)	coping (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	brick that is laid sideways at the top of a wall
an embankment built around a space for defensive purposes
a masonry fence (as around an estate or garden)
a layer of material that encloses space
(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)	coping (verb)
surround with a wall in order to fortify