person who tracks person or thing by following their trail.

In, at or to any place. Use to indicate limits or variation. any place.

maintenance of constant difference in frequency between two or more connected circuits or components. To use marks to follow a wild animal.

When one thing is replaced by another.

act or process of downloading data. To transfer data from a computer or the internet.

user of professional service. People paying for professional services.

(of book etc.) prepared and issued for public sale. To prepare and make available a book magazine etc..

global computer network providing information and communication facilities.

Having a distinct manner different from others. Single person, looked at separately from others.

programs and other operating information used by computer.

To add or type information in a computer.

event intended for public entertainment. (Animals) to indicate readiness for sex.

advantage or profit gained. Good results or effects, something advantageous. To have a good effect or be helpful.

Something that joins things together; being joined.

Improvement or development. To move forward or toward a place or goal.