Identification is required to enter the building.

Can you identify the person in this photo?

His ideology shaped his political beliefs.

He's such an idiot.

She spends her weekends being idle and relaxing at home.

Many people idolize celebrities and try to emulate their lifestyles.

His ignorance about history is evident.

He is ignorant of the facts.

This diagram will illustrate the process of photosynthesis.

This book contains beautiful illustrations.