wall vs fence

wall and fence both are nouns.

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

As nouns, fence is a hypernym of wall; that is, fence is a word with a broader meaning than wall:

Other hypernyms of wall include fencing.

As verbs, wall and fence are synonyms defined as:

Other synonyms of wall include fence in, palisade, surround.

wall (noun)	fence (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	a barrier that serves to enclose an area
an embankment built around a space for defensive purposes	a dealer in stolen property
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)	fence (verb)
surround with a wall in order to fortify	have an argument about something
	surround with a wall in order to fortify
	fight with fencing swords
	enclose with a fence
	receive stolen goods