wall hanging vs dossel

wall hanging and dossel both are nouns.

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

As nouns, dossel is a hyponym of wall hanging; that is, dossel is a word with a more specific, narrower meaning than wall hanging:

wall hanging: decoration that is hung (as a tapestry) on a wall or over a window
dossel: an ornamental hanging of rich fabric hung behind the altar of a church or at the sides of a chancel

Other hyponyms of wall hanging include dossal, Kakemono, lambrequin, arras, tapestry.

wall hanging (noun)	dossel (noun)
decoration that is hung (as a tapestry) on a wall or over a window	an ornamental hanging of rich fabric hung behind the altar of a church or at the sides of a chancel