virus

As nouns the difference between parasite and virus

is that parasite is (pejorative) a person who lives on other people's efforts or expense and gives little or nothing back while virus is virus.

As a proper noun bacillus

is .

As a noun virus is

virus.

As nouns the difference between virus and trogons

is that virus is virus while trogons is .

As nouns the difference between virus and water

is that virus is virus while water is (uncountable) a chemical, found at room temperature and pressure as a clear liquid, having the formula h₂o, required by all forms of life on earth.

As a verb water is

to pour water into the soil surrounding (plants).

As a verb corona

is .

As a noun virus is

virus.

As nouns the difference between microorganism and virus

is that microorganism is while virus is virus.

As nouns the difference between microbe and virus

is that microbe is any microorganism, but specially said of those microorganisms which are harmful types of bacteria while virus is venom, as produced by a poisonous animal etc.

As nouns the difference between pandemic and virus

is that pandemic is a pandemic disease; a disease that hits a wide geographical area and affects a large proportion of the population while virus is virus.

As an adjective pandemic

is widespread; general.

As nouns the difference between vermin and virus

is that vermin is any one of various common types of small insects or animals which cause harm and annoyance while virus is venom, as produced by a poisonous animal etc.

As a noun virus

is virus.

As an adjective undefined is

lacking a definition or value.