It is a vertex.
the place where two faces intersect
No. The faces of a tetrahedron are equilateral triangles, but none of the faces is parallel to another one of the faces -- they could not be parallel, since by the definition of a tetrahedron, all the faces intersect(!) and parallel planes do not intersect.
Two lines cross or intersect at a point.
A vertex.
an edge.
That would be classified as an edge.
cap
A pyramid never has parallel faces. Any two faces intersect.
It is a vertex.
An edge.
It is an edge.
EDGE
An edge.
Edge
the place where two faces intersect
I believe it's called a vertex