The word menace is a noun. The plural is menaces.
metaphor
"He looked at me with menacing eyes." "The menacing wolf bared his teeth at me snarling."
I was menacing to the store/back home
The mood or tone of a speech from an evil empire would likely be menacing, authoritative, and threatening. It may convey a sense of domination, aggression, and a desire for control over others.
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech for "unfamiliar" is an adjective.