Peak
Part of speech: verb
Definition: To reach a highest degree or maximum.
Part of speech: noun
Definition: A point; the sharp end or top of anything that terminates in a point; as, the peak, or front, of a cap. The top, or one of the tops, of a hill, mountain, or range, ending in a point; often, the whole hill or mountain, esp. when isolated; as, the Peak of Teneriffe. The upper aftermost corner of a fore-and-aft sail; -- used in many combinations; as, peak-halyards, peak-brails, etc. The narrow part of a vessel's bow, or the hold within it. The extremity of an anchor fluke; the bill. For sine waves, the point at which the value of y is at its maximum.
Example sentence: I know what I need to do to prepare myself, and I try to do the best I can to take care of my body and prolong my peak years as a baseball player.
Vertex
Part of speech: noun
Definition: The highest point of something.The highest surface on the skull.The highest point of something.# Informally; a corner.## (angle) The common point of the two rays of the angle.## (polygon) The meeting points of two sides.## (polyhedron) The meeting point of three or more faces and an equal number of edges.## (polytope) a point where the corners of three or more cells meet and connect to each other.## (curve) a point on the curve with a local minimum or maximum of curvature.# One of the elements of a graph joined by zero or more edges to other vertices.A point in 3D space, usually given in terms of its x-, y-, and z-coordinates.The point where the surface of an optical element (e.g. lens) crosses the optical axis.(nuclear or particle physics) the interaction point.where the Prime Vertical meets the ecliptic in the west.