gall bladder vs gallbladder

gall bladder and gallbladder both are nouns.

Word	Noun	Adjective	Verb	Adverb
gall bladder	Yes	No	No	No
gallbladder	Yes	No	No	No

As nouns, gall bladder and gallbladder are synonyms defined as:

gall bladder and gallbladder: a muscular sac attached to the liver that stores bile (secreted by the liver) until it is needed for digestion

gall bladder (noun)	gallbladder (noun)
a muscular sac attached to the liver that stores bile (secreted by the liver) until it is needed for digestion	a muscular sac attached to the liver that stores bile (secreted by the liver) until it is needed for digestion