Cover-up and Dirty pool

Cover-up noun - Something that covers or conceals like a piece of cloth.

Dirty pool and cover-up are semantically related. In some cases you can use "Dirty pool" instead a noun phrase "Cover-up".

Dirty pool noun - Conduct that is unfair or unethical or unsportsmanlike.

Cover-up and dirty pool are semantically related. Sometimes you can replace phrase "Cover-up" with "Dirty pool", this phrases are similar.