Sinkhole and Thank-you-ma'am

Sinkhole noun - A depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof.

Thank-you-ma'am and sinkhole are semantically related. In some cases you can replace phrase "Thank-you-ma'am" with "Sinkhole", this terms are similar.

Sinkhole and thank-you-ma'am are semantically related. Sometimes you can replace term "Sinkhole" with "Thank-you-ma'am", this terms are similar.