bed ground vs bed-ground

bed ground and bed-ground both are nouns.

Word	Noun	Adjective	Verb	Adverb
bed ground	Yes	No	No	No
bed-ground	Yes	No	No	No

As nouns, bed ground and bed-ground are synonyms defined as:

bed ground and bed-ground: an area on which a drove of cattle or sheep can sleep for a night

Other synonyms of bed ground include bedground.

bed ground (noun)	bed-ground (noun)
an area on which a drove of cattle or sheep can sleep for a night	an area on which a drove of cattle or sheep can sleep for a night