Interest group and Single-interest group

Interest group noun - A group of people with a common identifying interest that they seek to protect and promote.

Single-interest group and interest group are semantically related. in group with one cause or activity topic. In some cases you can use "Single-interest group" instead a noun phrase "Interest group".

Interest group and single-interest group are semantically related. Sometimes you can replace phrase "Interest group" with "Single-interest group", this phrases are similar.