workboard vs work-board

workboard and work-board both are nouns.

Word	Noun	Adjective	Verb	Adverb
workboard	Yes	No	No	No
work-board	Yes	No	No	No

As nouns, workboard and work-board are synonyms defined as:

workboard and work-board: a horizontal board that provides a supported surface for manual work

workboard (noun)	work-board (noun)
a horizontal board that provides a supported surface for manual work	a horizontal board that provides a supported surface for manual work