deathwatch vs Xestobium rufovillosum

deathwatch and Xestobium rufovillosum both are nouns.

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

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

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

Other synonyms of deathwatch include deathwatch beetle.

deathwatch (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
minute wingless psocopterous insects injurious to books and papers