Back street and Under-the-table

Back street noun - A narrow street with walls on both sides.

Under-the-table and back street are semantically related. In some cases you can use "Under-the-table" instead an adjective phrase "Back street".

Under-the-table adjective - Designed and carried out secretly or confidentially.

Back street and under-the-table are semantically related. Sometimes you can replace phrase "Back street" with "Under-the-table", this phrases are similar.