Two master linguists, in an interview for the ages:

[…] AG: So when animals chat to each other, does them talk in language?

NC: Well, that’s more or less a matter of definition. I mean, every organism has some means of communication, including insects.

AG: How many words does you know?

NC: Well… the… normally humans, by maturity, have tens of thousands of words…

AG: For real?

NC: Yeah.

AG: What is some of them?

NC: Well, the ones we’re using.

AG: For real. Me know loads of words: parachute, photograph, anthems, spaghetti, camera…

NC: Well, if you count them up it’ll be in the tens of thousands. […]