All of those words mean vastly different things depending on language and culture.

[So he can't say whether or not she acts like one, but he's being pedantic just for the sake of clarity. He understands the sentiment well enough, his expression softening a little.]

But I would not have, at first glance, presumed you were anything other than human. It seems to be the default assumption here in general.

[He says the last statement with a tone that's just faintly lighter than neutral, not stating anything outright just yet but feeling it's okay to go ahead and drop a hint.]