Basis and Underbelly

Basis noun - An immaterial thing upon which something else rests.

Underbelly and basis are semantically related In some cases you can use "Underbelly" instead a noun "Basis".

Nearby Word: basic

Underbelly noun - A social sphere that exists outside of the mainstream.

Basis and underbelly are semantically related in bottom topic. Sometimes you can use "Basis" instead a noun "Underbelly", if it concerns topics such as foundation.