thumbtack vs. pushpin
[thuhm-tak]
/ ˈθʌmˌtæk /
noun
verb (used with object)
[poosh-pin]
/ ˈpʊʃˌpɪn /
noun
-
a short pin having a spool-shaped head of plastic, glass, or metal, used for affixing material to a bulletin board, wall, or the like.
-
an early children's game.
-
Archaic. child's play; triviality.