a person who makes a telephone call

a person who is calling out or talking loudly

वह व्यक्ति जो जोर से बुला रहा है या बात कर रहा है

English Usage: The caller in the crowd was trying to get everyone's attention.

Hindi Usage: Crowd में कॉलर सभी का ध्यान खींचने की कोशिश कर रहा था।

to make a phone call

to shout out to someone

किसी को पुकारना

English Usage: She called out to the children playing in the park.

Hindi Usage: उसने पार्क में खेल रहे बच्चों को पुकारा।