The special knowledge that an expert has.

Different, better or greater than normal. Heavily discounted sales item.

forward movement towards destination. To move forward or toward a place or goal.

Knowledge gained by living life, doing new things. encounter event or occurrence.

Reason for which something is done; aim; goal. have as intention or objective.

act or process bringing change. Exchanges of one set of clothes for another. To exchange one kind of money for another.

young human. More than one child.

able to accept or tolerate delays, problems, or suffering without becoming annoyed or anxious. Person who receives medical treatment or care.

having paid employment. action of doing work. To make an effort to do something.

State in which two ideas or opinions are the same.

very enthusiastic and eager. To make something or someone become more active.

Electronic screen on which you can see images. observe and check quality over time.

Academic field studying the practice of teaching.

Act of making a choice. To make something happen by strongly wanting it.

likely or prone to be affected by. conditionally upon. The person or thing that does the action of a verb. cause or force person or thing to undergo.