Polynomial and Quadratic polynomial

Polynomial noun - A mathematical function that is the sum of a number of terms.

Quadratic polynomial and polynomial are semantically related. In some cases you can replace phrase "Quadratic polynomial" with "Polynomial", this terms are similar.

Quadratic polynomial noun - A polynomial of the second degree.

Polynomial and quadratic polynomial are semantically related. You can use "Polynomial" instead a noun phrase "Quadratic polynomial".