Metallic element and Pm

Metallic element noun - Any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc..

Pm and metallic element are semantically related. In some cases you can replace term "Pm" with "Metallic element", this terms are similar.

Pm noun - A soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium.

Metallic element and Pm are semantically related. You can use "Metallic element" instead a noun "Pm".