呼ぶ
よぶ · yobu · JLPT N5 · verb-godan
to call
📣 yobu sounds like yo, boo! — what you shout to call someone over
呼 = mouth 口 + the sound part 乎, so the kanji is literally a mouth making a call. Shouting yo, boo! covers both meanings: calling a name and inviting someone to come along.