A vertex (plural: vertices) has a slightly different meaning depending on context. Computer graphics - data structure that describes position of a point in 2D or 3D space. Geometry - point where higher-dimensional geometric objects meet; Graph theory - fundamental unit of graphs;
A vertex in computer graphics is a data structure that describes certain attributes, like the position of a point in 2-Dimensional or 3-Dimensional space, at multiple points on a surface.
In geometry, a vertex is a point where two or more curves, lines, or edges meet. As a consequence of this definition, the point where two lines meet to form an angle and the corners of polygons and polyhedra are vertices.
In mathematics, and more specifically in graph theory, a vertex or node is the fundamental unit of which graphs are formed (usually represented by a circle with a label)