I. noun
1.
Synonyms: top 1, apex, crown, fastigium, peak, roof, summit, vertex
Related Word: cap
2.
Synonyms: ridge 1, chine, hogback
3.
Synonyms: apex 2, acme, apogee, climax, crescendo, culmination, noon, peak, pinnacle, summit
II. verb
Synonyms: surmount 3, cap, crown, top