rood vs rood-tree

rood and rood-tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
rood	Yes	No	No	No
rood-tree	Yes	No	No	No

As nouns, rood and rood-tree are synonyms defined as:

Other synonyms of rood include crucifix.

rood (noun)	rood-tree (noun)
representation of the cross on which Jesus died	representation of the cross on which Jesus died