work table vs workbench

work table and workbench both are nouns.

Word	Noun	Adjective	Verb	Adverb
work table	Yes	No	No	No
workbench	Yes	No	No	No

As nouns, workbench is a hyponym of work table; that is, workbench is a word with a more specific, narrower meaning than work table:

Other hyponyms of work table include drafting table, drawing table, bench, work bench.

work table (noun)	workbench (noun)
a table designed for a particular task	a strong worktable for a carpenter or mechanic