useimmat = most
Most cars are expensive.
Most people want to rest on / at weekends.
eniten = the most:
We went picking berries. My Dad picked the most berries. = eniten marjoja
I picked the least berries. = vähiten marjoja

NB!
I knew little about him.
Little DID I KNOW about him.
kieltosanan (not, nor, never, no) tai rajoittavan määreen (little, hardly = barely = scarcely, seldom = rarely, only) jälkeen tulee TÄYDELLINEN SUORAN KYSYMYKSEN sanajärjestys:
He seldom calls me.
= Seldom DOES HE CALL me.
He hardly paid any attention to me.
= Hardly DID HE PAY any attention to me.
It was not until yesterday that I realized what a fool I had been.
= Not until yesterday DID I REALIZE what a fool I had been.
It was only yesterday that I realized what a fool I had been.
= Only yesterday DID I REALIZE what a fool I had been.