gal vs acceleration unit

gal and acceleration unit both are nouns.

Word	Noun	Adjective	Verb	Adverb
gal	Yes	No	No	No
acceleration unit	Yes	No	No	No

As nouns, acceleration unit is a hypernym of gal; that is, acceleration unit is a word with a broader meaning than gal:

gal: a unit of gravitational acceleration equal to one centimeter per second per second (named after Galileo)
acceleration unit: a unit for measuring acceleration

gal (noun)	acceleration unit (noun)
alliterative term for girl (or woman)	a unit for measuring acceleration
United States liquid unit equal to 4 quarts or 3.785 liters
a unit of gravitational acceleration equal to one centimeter per second per second (named after Galileo)