rood-tree vs crucifix

rood-tree and crucifix both are nouns.

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

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

Other synonyms of rood-tree include rood.

rood-tree (noun)	crucifix (noun)
representation of the cross on which Jesus died	a gymnastic exercise performed on the rings when the gymnast supports himself with both arms extended horizontally
	representation of the cross on which Jesus died