Some words

I always seem to forget how to say "some (people, things, words, etc)
here's my reminder.

分(わ)からない言葉 (ことば)もある
not-understood words exist.

ie. There are words I don't understand.

いくつか分(わ )からない 言葉(ことば) があります

some not-understood words exist.
ie. There are some words I don't understand.