The ten most-used English words are all grammar words: the, be, to, of, and, a, in, that, have, I
'The' is the commonest word in written English; 'I' is the commonest word in spoken English.
However, you might need a few more words than this to say anything meaningful! Some of the most common content words are these: make, take, time, like, good, people, see, look, think, give, want, day.
I hope that helps.