yell, cry, call, scream, summon
喚 centers on producing a loud, urgent vocal sound: yelling, crying out, calling, or screaming to get attention or summon someone.
喚 combines 口 (mouth) with 奐, which likely contributes the sound and suggests a forceful or expansive action, together giving the idea of shouting or calling out.
The left side is a mouth 口, and the right side 奐 looks like a person with a large head and arms spread wide. Picture someone opening their mouth wide and throwing their arms out to yell or summon attention.
For カン, imagine a can being used as a makeshift megaphone: you yell into the can to call someone, and the sound 'can' cues カン.
summons; subpoena; citation
arousal; excitation; awakening; evocation
to shout; to cry (out); to yell; to scream; to clamour
summons
agonizing cries; pandemonium; two of Buddhism's hells
to wail; to bawl; to cry loudly; to shout (while crying)
shout; scream
summons for directions (legal UK)
(writ of) summons; subpoena; citation
summoned creature; summoned beast
to yell; to bawl out
to shout; to cry (out); to yell; to scream; to clamour
verbal check (esp. on railroads); verbal confirmation
shout (of excitement); roar (of a crowd)
Mahāraurava; The Hell of Great Wailing; The Great Screaming Hell; the fifth of eight hot hells in Buddhism
pointing and calling (occupational safety method)
to alert; to get one's attention; to draw one's attention
call for attention; alert; heads-up; reminder
summoning of a sworn witness (court, Diet); subpoena