crossword vs crossword puzzle

crossword and crossword puzzle both are nouns.

Word	Noun	Adjective	Verb	Adverb
crossword	Yes	No	No	No
crossword puzzle	Yes	No	No	No

As nouns, crossword and crossword puzzle are synonyms defined as:

crossword and crossword puzzle: a puzzle in which words corresponding to numbered clues are to be found and written in to squares in the puzzle

crossword (noun)	crossword puzzle (noun)
a puzzle in which words corresponding to numbered clues are to be found and written in to squares in the puzzle	a puzzle in which words corresponding to numbered clues are to be found and written in to squares in the puzzle