चुसकी
The lamb staggered to its feet and took its first suck of milk.

सोखना  =  absorb
Sponge sucks water

चूसना  =  event
Suck the juice from an orange

आत्मसात करना  =  imbibe
Lesson in his boyhood

खींच लेना  =  pull
Heavy tides sucked him under water

दूध पिलाना
You cannot suck your baby in public in some places.

दूध पीना
The baby sucked on the mother's breast.