Central feature, 4 letters
Central idea, 4 letters
Central point, 4 letters
Central point, as of an argument, 4 letters
Core, 4 letters
Critical point, 4 letters
Decisive point, 4 letters
Decisive stage, 4 letters
Essence, 4 letters
Essential point, 4 letters
Gist, 4 letters
Heart, 4 letters
Heart of the matter, 4 letters
Key point, 4 letters
Main idea, 4 letters
Main point, 4 letters
Nitty-gritty, 4 letters
Nub, 4 letters
Pivotal part, 4 letters
Pivotal point, 4 letters
Point, 4 letters
Thrust, 4 letters
Vital point, 4 letters
A small conspicuous constellation the the southern hemisphere in the Milky Way near Centaurus, 4 letters
The most important point, 4 letters
Critical points, 6 letters
Essential points, 6 letters
Pivotal points, 6 letters
Central point, 15 letters