red-hot vs sizzling

red-hot and sizzling both are adjectives.

Word	Noun	Adjective	Verb	Adverb
red-hot	No	Yes	No	No
sizzling	No	Yes	No	No

As adjectives, red-hot and sizzling are synonyms defined as:

red-hot and sizzling: characterized by intense emotion or interest or excitement

red-hot (adjective)	sizzling (adjective)
very fast; capable of quick response and great speed	hot enough to burn with or as if with a hissing sound
glowing red with heat	characterized by intense emotion or interest or excitement
newest or most recent
having strong sexual appeal
characterized by intense emotion or interest or excitement