worksheet vs written account

worksheet and written account both are nouns.

Word	Noun	Adjective	Verb	Adverb
worksheet	Yes	No	No	No
written account	Yes	No	No	No

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

Other hypernyms of worksheet include written record.

worksheet (noun)	written account (noun)
a sheet of paper with multiple columns; used by an accountant to assemble figures for financial statements	a written document preserving knowledge of facts or events
a piece of paper recording work planned or done on a project