Cloudy and overcast are synonyms.
clear,partly cloudy,cloudy,mostly cloudy,and overcast
Overcast is another word for cloudy.
overcast
They can be antonyms (opposite meanings), not synonyms.
cloudy
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there is no synonyms or antonyms for convection current
Antonyms: opposite. Synonyms: similar.
Synonyms: moving Antonyms: Fixed, Stationary
they are closer to synonyms than antonyms, although they are not direct synonyms.
They are synonyms. Synonyms have similar meanings, antonyms have opposing meanings.
Synonyms. Synonyms are words the same in meaning and antonyms are opposites