1. vertex, apex
2. top (e.g. of a mountain), summit, peak
3. top (of a profession, field, etc.), summit
4. peak (of popularity, a boom, etc.), height (e.g. of prosperity), apex, zenith, climax
1. at (place, time), in, on, during
2. to (direction, state), toward, into
3. for (purpose)
4. because of (reason), for, with
5. by, from
6. as (i.e. in the role of)
7. per, in, for, a (e.g. "once a month")
8. and, in addition to
9. if, although
