decker vs artefact

decker and artefact both are nouns.

Word	Noun	Adjective	Verb	Adverb
decker	Yes	No	No	No
artefact	Yes	No	No	No

As nouns, artefact is a hypernym of decker; that is, artefact is a word with a broader meaning than decker:

decker: (often used in combinations) something constructed with multiple levels
artefact: a man-made object taken as a whole

Other hypernyms of decker include artifact.

decker (noun)	artefact (noun)
(often used in combinations) something constructed with multiple levels	a man-made object taken as a whole