Fissionable and Fissile materials

[Bashayer Abdullah]

TL;DR

Fissionable and Fissile materials

What is the different between fissionable materials and fissile materials? And how I can distinguish between them?I am deeply looking to your answers.
Thank you

 

[mathman]

From wikipedia:

"Fissile" is distinct from "fissionable". A nuclide capable of undergoing fission (even with a low probability) after capturing a neutron of high or low energy[5] is referred to as "fissionable". A fissionable nuclide that can be induced to fission with low-energy thermal neutrons with a high probability is referred to as "fissile".[6] Although the terms were formerly synonymous, fissionable materials include also those (such as uranium-238) that can be fissioned only with high-energy neutrons. As a result, fissile materials (such as uranium-235) are a subset of fissionable materials.