This is frequently call an "antonym".
No. They have different meanings, but not opposite.
antonyms
No, they do not have similar meanings. Yes, they have contradictory meanings. They mean neither the same nor opposite.
Thesaurus
Words that have opposite meanings are called antonyms.
Barbarism
CONTRANYM
No, they have opposite meanings
Opposite meanings, also known as antonyms, refer to words that convey contrasting or opposing concepts. For example, "hot" and "cold" are antonyms because they describe opposite temperatures. Understanding opposite meanings can enhance vocabulary and improve comprehension in language.
Antonyms are words that have pretty much opposite meanings.
opposite meanings.
Antonyms are words which have opposite meanings.