頂点
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
経済は今景気循環の頂点にある。
The economy is at peak of a business cycle at present.