Crossword puzzle clue "they can be essential"

Here are the possible solutions for they can be essential clue

Answer
Clue
Relevancy
oils
Clue
They can be essential
They may be essential
Definition
OIL, to lubricate with a greasy substance
swine
Clue
They can't fly, but they can get the flu
atsigns
Clue
They're essential to email addresses
doors
Clue
They're essential to some exit strategies
Definition
DOOR, an entrance that opens and closes
oreos
Clue
They're essential to Midnight Mash Up snacks
They're essential to a Dairy Queen "Blizzard"
sequels
Clue
They're essential to film franchises

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