All 4 Uses

nostalgia
in
This Lullaby, by Sarah Dessen
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It's too early for nostalgia," I told her.†
Chpt 10

nostalgia = longing for something past
To them it was just old and sappy enough now to be nostalgic, a song their parents might have listened to.†
Chpt 11 *

nostalgic = with a longing for something past
It was weird how even the smallest things were making me nostalgic now, and I had a moment of quiet respect as I picked a cup off the stack, then filled it with ice.†
Chpt 16
Maybe it would be the hit the record company predicted, striking a chord in our collective past, prompting a wave of nostalgia that would carry Dexter and the band everywhere they'd ever dreamed.†
Chpt 18

nostalgia = longing for something past

Definitions:

(1) (nostalgia)
happiness that come with the memory of good times combined with a hint of sadness that those times are over
(2) (meaning too rare to warrant focus)