worksheet vs sheet of paper

worksheet and sheet of paper both are nouns.

Word	Noun	Adjective	Verb	Adverb
worksheet	Yes	No	No	No
sheet of paper	Yes	No	No	No

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

worksheet: a sheet of paper with multiple columns; used by an accountant to assemble figures for financial statements
sheet of paper: paper used for writing or printing

Other hypernyms of worksheet include piece of paper, sheet.

worksheet (noun)	sheet of paper (noun)
a sheet of paper with multiple columns; used by an accountant to assemble figures for financial statements	paper used for writing or printing
a piece of paper recording work planned or done on a project