It may also include social concepts such as gift giving or serving.

All these sentences include the concept of weight yet the way we perceive them is different.

It also includes the concept of fractions and negative numbers.

His works include provocative themes and concepts which anger some.

It includes concepts such as demography, economy, natural forces, technology, politics, and culture.

A knowledge economy include the concept of exchanging knowledge-based products and services.

Though they included the concept that biological "changes over time" occur, the word evolution was not mentioned.

Ethical debate has long included the concept of property.

The union proposal includes several novel concepts, including a more traditional interpretation of the word "contract."

What are the chances that the user model included the concept of invisible sheets?