person who provides expert advice professionally.

Doing your job. action of doing work. To operate a machine or device.

first person to explore new territory. People exploring new places or fields of endeavor. To begin or discover something new.

Being the best or most important. before anything else in rank or position.

To guide or explain something, e.g. a town.

Existing only in a digital world.

To participate in an activity with others.

A structure with a roof and walls, e.g. a house. To establish e.g. a reputation, over time.

Being what was wanted or needed. used to greet someone in polite or friendly way. Friendly greeting to someone who has arrived. greet someone arriving in polite or friendly way.

One more, but not this. used to refer to additional person or thing of same type as one. One more (thing).

in most essential respects.

Act of creating an image in your mind.

definite. To make a choice about; choose after thinking.

Study done to discover new ideas and facts. investigate systematically.

person who is very knowledgeable about or skilful in particular area. Skillful people with special knowledge.