Base and Grass roots

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

Grass roots and base are semantically related. In some cases you can replace phrase "Grass roots" with "Base", this terms are similar.

Nearby Words: basic, basal, based, baseline, baseball

Grass roots noun - The common people at a local level (as distinguished from the centers of political activity).

Base and grass roots are semantically related. Sometimes you can use "Base" instead a noun phrase "Grass roots".