Boson (The hypothetical graviton, which is theorized to mediate gravity, is one of these.)

Stop posting right after me!

String theory(relates to subatomic particles)

Sweaters

   Made of strings, just like the universe is made of strings as defined by quantum theory.

Cold, what sweaters meant to block

Chronic Obstructive Lung Disease (COLD)

winter (mainly chronic obstructive lung disease happens in this season)

Snow (mainly there on winter)

alpha centauri (a star's name)

Greek (alpha is greek letter)