You know you have learned a new language when...

Those in whom the Greek word lives only while they are hunting for it in the lexicon, and who then substitute the English word for it, are not reading Greek at all; they are only solving a puzzle.

The very formula, "Naus means a ship," is wrong. Naus and ship both mean a thing, they do not mean one another. Behind Naus, and behind navis or naca, we want to have a picture of a dark, slender mass with sail or oars, climbing the ridges, with no officious English word intruding.

via Beginning to Think in Greek.