hit the dirt vs hit the deck

hit the dirt and hit the deck both are verbs.

Word	Noun	Adjective	Verb	Adverb
hit the dirt	No	No	Yes	No
hit the deck	No	No	Yes	No

As verbs, hit the dirt and hit the deck are synonyms defined as:

hit the dirt and hit the deck: fall or drop suddenly, usually to evade some danger

hit the dirt (verb)	hit the deck (verb)
fall or drop suddenly, usually to evade some danger	fall or drop suddenly, usually to evade some danger