Cover-up and Stand guard

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

Stand guard and cover-up are semantically related. In some cases you can use "Stand guard" instead a verb phrase "Cover-up".

Stand guard verb - Watch over so as to protect.

Cover-up and stand guard are semantically related. Sometimes you can replace phrase "Cover-up" with "Stand guard", this phrases are similar.