arras vs wall hanging

arras and wall hanging both are nouns.

Word	Noun	Adjective	Verb	Adverb
arras	Yes	No	No	No
wall hanging	Yes	No	No	No

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

arras: a wall hanging of heavy handwoven fabric often with pictorial designs
wall hanging: decoration that is hung (as a tapestry) on a wall or over a window

Other hypernyms of arras include hanging.

arras (noun)	wall hanging (noun)
a wall hanging of heavy handwoven fabric often with pictorial designs	decoration that is hung (as a tapestry) on a wall or over a window