Semantics is the study of word meanings.
It is one part of linguistics, other being syntax: the study of sentence structure, phonology and phonetics: the study of sounds, morphology: the study of word structures and pragmatics: the study of actual use of language.
The definition would be "the military doctrine that an enemy will be deterred from using nuclear weapons as long as he can be destroyed as a consequence"
source: https://www.vocabulary.com/dictionary/nuclear%20deterrence
Answer:
Appalachian Mountains
The Appalachian Mountains run from Canada to Alabama along the eastern part of North America.
