to call together / to summon / to convene / temple or monastery (used in place names in Inner Mongolia)
召
=
刀
+
口
:
Mnemonic symbol: an intercom to call everyone together. James II of England (zh) prepares a few mandarins (口) for everyone in the aorta's bathroom (ao4) by cutting them with a cleaver (刀). As he is finished he calls everyone together (召) over the intercom (召) to come over and fetch a piece.
to gather / to collect / collected works / classifier for sections of a TV series etc: episode
集
=
木
+
隹
:
The eight most important sparrows (隹) in the world hold a very exclusive gatherig just inside the space station's entrance (Ø2). Joan of Arc (ji) also wants to join, so she pretends to be a sparrow and sits atop the Christmas tree (木) like the other sparrows.