fox hole vs foxhole

fox hole and foxhole both are nouns.

Word	Noun	Adjective	Verb	Adverb
fox hole	Yes	No	No	No
foxhole	Yes	No	No	No

As nouns, fox hole and foxhole are synonyms defined as:

fox hole and foxhole: a small dugout with a pit for individual shelter against enemy fire

fox hole (noun)	foxhole (noun)
a small dugout with a pit for individual shelter against enemy fire	a small dugout with a pit for individual shelter against enemy fire