Mehr - some or more?
I realize it means both but is there anyway to tell the difference? If it's used as an adjective, I can't tell at all.
Mehr is an adverb as well as an adjective, and it means "more". It is the comparative form of these adjectives: sehr (very) viel (a lot) viele (many) "Mehrere" is close to but means "several" I can't think of an example where it would mean "some" though :/
Hope I answered your question Regards :)
Please notice the difference between "mehr" and "mehrere" in Mottenen's answer.