deathwatch beetle vs Xestobium rufovillosum

deathwatch beetle and Xestobium rufovillosum both are nouns.

Word	Noun	Adjective	Verb	Adverb
deathwatch beetle	Yes	No	No	No
Xestobium rufovillosum	Yes	No	No	No

As nouns, deathwatch beetle and Xestobium rufovillosum are synonyms defined as:

deathwatch beetle and Xestobium rufovillosum: bores through wood making a ticking sound popularly thought to presage death

Other synonyms of deathwatch beetle include deathwatch.

deathwatch beetle (noun)	Xestobium rufovillosum (noun)
bores through wood making a ticking sound popularly thought to presage death	bores through wood making a ticking sound popularly thought to presage death