seduce, call, send for, wear, put on, ride in, buy, eat, drink, catch (cold)
召 centers on summoning or calling someone to come, often with authority. The other meanings—wearing, eating, drinking, catching cold—are honorific or humble applications of being called or invited to do something.
summons; subpoena; citation
to eat; to drink
convening; calling together (e.g. parliament); call-up (for military service)
to call; to summon; to send for; to invite
summons; call
recall (esp. of an envoy or an ambassador); calling someone back; summons (home)
summoning; calling; riding; wearing; dressing; clothing
servant; menial
draft papers; callup notice
thoughts; opinion; (one's) discretion; will (esp. of God)
clothing
Imperial train; royal train
changing one's clothes; change of clothes
to like; to prefer; to be pleased by
to do
food
to forfeit; to confiscate
to employ; to hire (a servant)
to call in
to call out; to summon
召 combines 刀 (blade) and 口 (mouth), suggesting a commanding call or summons. The exact historical development is uncertain, but the idea of authoritative calling is well established.
A blade 刀 over a mouth 口: imagine a sharp command cutting through the air, summoning someone to appear. The authority of the blade calls the mouth to action.
For ショウ, picture a show where a director summons actors onto the stage: show -> ショウ, and the call brings them forward.