That is 'connotation'
Infer. If you infer something you are picking up the implied meaning.
The term is "connotation" (as compared to the literal meaning or denotation).
The implied meaning of a word
Optional means non-obligatory or suggested.
I believe you are looking for the word "connotation." Its opposite is "denotation."
very poor and could not afford pants
Maternal is the medical term meaning from the mother, while paternal means from the father
Comatose is the term meaning to be in a coma. Unconscious is another term.
The term guy simply means man, or boy.