lemon vs artefact

lemon and artefact both are nouns.

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

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

lemon: an artifact (especially an automobile) that is defective or unsatisfactory
artefact: a man-made object taken as a whole

Other hypernyms of lemon include artifact.

lemon (noun)	artefact (noun)
an artifact (especially an automobile) that is defective or unsatisfactory	a man-made object taken as a whole
a strong yellow color
a distinctive tart flavor characteristic of lemons
yellow oval fruit with juicy acidic flesh
a small evergreen tree that originated in Asia but is widely cultivated for its fruit