crest The five letter word for the top of the hill is the cliff.
Top. as in top of the morning
top, tip
The top of a high mountain is the summit.
A peak is a jagged mountain top.
A mesa has a flat top.
Plateau
carrier, plateau
Mesa would be one
The adjective top: supreme, highest The verb top: surpass
Gateway
Table ...
Four-letter word for flat-topped plateau is "mesa". which is Spanish for "table". Mesa tyiuyfgyiopoiuyttyuiop[poiuytrtyuiop[][poiuy
The word you need may be 'Plateau'
A mesa is a flat-topped mountain.
Off the top of my head, the word profile fits that pattern.
A mountain area with a flat top is called a plateau. Plateaus are elevated landforms that are typically flat on the top and have steep sides.