payable vs account payable

payable and account payable both are nouns.

Word	Noun	Adjective	Verb	Adverb
payable	Yes	Yes	No	No
account payable	Yes	No	No	No

As nouns, payable and account payable are synonyms defined as:

payable and account payable: a liability account showing how much is owed for goods and services purchased on credit

payable (noun)	account payable (noun)
a liability account showing how much is owed for goods and services purchased on credit	a liability account showing how much is owed for goods and services purchased on credit

payable (adjective)	account payable (adjective)
subject to or requiring payment especially as specified