(used, as after comparative adjectives and adverbs, to introduce the second member of an unequal comparison): She's taller than I am.
(used after some adverbs and adjectives expressing choice or diversity, such as other, otherwise, else, anywhere, or different, to introduce an alternative or denote a difference in kind, place, style, identity, etc.): I had no choice other than that. You won't find such freedom anywhere else than in this country.
(used to introduce the rejected choice in expressions of preference): I'd rather walk than drive there.
except; other than: We had no choice than to return home.
when: We had barely arrived than we had to leave again.