journal vs book of account

journal and book of account both are nouns.

Word	Noun	Adjective	Verb	Adverb
journal	Yes	No	No	No
book of account	Yes	No	No	No

As nouns, book of account is a hypernym of journal; that is, book of account is a word with a broader meaning than journal:

Other hypernyms of journal include account book, book, ledger, leger.

journal (noun)	book of account (noun)
the part of the axle contained by a bearing	a record in which commercial accounts are recorded
a record book as a physical object
a periodical dedicated to a particular subject
a daily written record of (usually personal) experiences and observations
a ledger in which transactions have been recorded as they occurred