TOISET – TOISET:
SOME – OTHERS = epämääräinen muoto
Some people like jogging, others like walking.
SOME – THE OTHERS = määräinen muoto
Some of these students are hard-working enough, the others are not.
TOINEN – TOINEN:
ONE – ANOTHER = epämääräinen muoto
Bruce took one pastry for himself and another for Pamela.
ONE – THE OTHER = määräinen muoto
Then there were only two pastries left. One was tuna and the other was cheese.