tarwood vs tar-wood

tarwood and tar-wood both are nouns.

Word	Noun	Adjective	Verb	Adverb
tarwood	Yes	No	No	No
tar-wood	Yes	No	No	No

As nouns, tarwood and tar-wood are synonyms defined as:

Other synonyms of tarwood include Dacrydium bidwilli, Halocarpus bidwilli, New Zealand mountain pine.

As nouns, tarwood and tar-wood are synonyms defined as:

tarwood and tar-wood: New Zealand silver pine of conical habit with long slender flexuous branches; adapted to cold wet summers and high altitudes

Other synonyms of tarwood include Dacrydium colensoi.

tarwood (noun)	tar-wood (noun)
New Zealand shrub	New Zealand shrub
New Zealand silver pine of conical habit with long slender flexuous branches; adapted to cold wet summers and high altitudes	New Zealand silver pine of conical habit with long slender flexuous branches; adapted to cold wet summers and high altitudes