relic vs physical object

relic and physical object both are nouns.

Word	Noun	Adjective	Verb	Adverb
relic	Yes	No	No	No
physical object	Yes	No	No	No

As nouns, physical object is a hypernym of relic; that is, physical object is a word with a broader meaning than relic:

relic: something of sentimental value
physical object: a tangible and visible entity; an entity that can cast a shadow

Other hypernyms of relic include object.

relic (noun)	physical object (noun)
an antiquity that has survived from the distant past	a tangible and visible entity; an entity that can cast a shadow
something of sentimental value