All 16 words, sorted alphabetically. Group them into four categories of four.
The four category names, easiest to hardest. No words revealed yet.
Theme name plus one word from each category.
GUT FEELING, HUNCH, INTUITION, and SIXTH SENSE are all synonyms for premonition — an instinctive sense of what's coming without rational evidence
DO NOT DISTURB, RING, SILENT, and VIBRATE are all modes you can set on a cellphone to manage incoming notifications and calls
BREADCRUMB (giving just enough attention to keep someone interested), CATFISH (faking an identity), GHOST (suddenly cutting off contact), and LOVE BOMB (overwhelming someone with affection to manipulate) are all harmful modern dating behaviors
AIR is in cAIRo, ALL is in hALLows, ARM is in wARMer, and THE is in oTHErs — each second word contains the first word embedded within its letters