A small bird is perched on the window sill, singing a song.

Eswatini is a small country located in Africa.

He is a perfectionist, and his approach to work is very strict.

This programming language is said to be Turing complete.

His performance was perfect and without blemish.

In mathematics, a perfect number refers to a number where the sum of its divisors, excluding the number itself, equals the number.

He is immersed in the study of panmagic squares.

This fish is completely farmed, and no capture is done in the natural environment.

He is suffering from a salivary gland disease.

The acinus of the lung is inflamed.