expert in or student of physics.

person qualified to treat sick people. People awarded the highest university degree. To treat someone's illness.

Taking your attention; making you want to know. To make someone want to know about something.

achieved or maintained by careful and deliberate effort. To focus on learning something usually at school.

the principal method of human communication, consisting of words used in a structured and conventional way and conveyed by speech, writing, or gesture. Words or signs used to communicate messages.

An event at which you learned something. encounter event or occurrence.

Activity of working to make a profit.

To focus on one area of a field or profession.

To make clear or easy to understand by describing.

Being what was wanted or needed. used to greet someone in polite or friendly way. instance or manner of greeting someone. To greet someone who has just arrived.

The act of helping people learn. To help someone learn or do something.

professional person. Highly qualified people, e.g. lawyers or doctors.

sentence worded or expressed so as to elicit information. ask someone questions.

Act of getting knowledge. To get knowledge or skills by study or experience.

belonging to same family or type. To demonstrate a logical relationship between.