Fundamental parts and Meat-and-potatoes

Meat-and-potatoes and fundamental parts are semantically related. In some cases you can replace phrase "Meat-and-potatoes" with "Fundamental parts", this phrases are similar.

Meat-and-potatoes adjective - Of or relating to the simplest facts or theories of a subject.

Fundamental parts and meat-and-potatoes are semantically related. You can use "Fundamental parts" instead a noun phrase "Meat-and-potatoes".