clanker vs physical object

clanker and physical object both are nouns.

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

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

clanker: something that makes a clanking noise.
physical object: a tangible and visible entity; an entity that can cast a shadow

Other hypernyms of clanker include object.

clanker (noun)	physical object (noun)
something that makes a clanking noise.	a tangible and visible entity; an entity that can cast a shadow