Work done to find or discover knowledge. investigate systematically.

Being what was wanted or needed. used to greet someone in polite or friendly way. instance or manner of greeting someone. To accept or receive something happily and gladly.

separate or respective. more than two but not many. More than two but not a large amount.

extremely delicate and light in way that seems not to be of this world.

The way in which the parts of a system or object are arranged or organized, or a system arranged in this way. construct or arrange according to plan.

high-level educational institution in which students study for degrees.

Division of a larger part or organization.

branch of technology and industry concerned with both aviation and space flight.

To go into a room, building etc..

season after winter and before summer, in which vegetation begins to appear, in northern hemisphere from March to May. The times when plants start growing after winter. move or jump suddenly or rapidly upwards or forwards.

Using or concerning machines. working parts of vehicle.

sound produced by sudden rush of air or liquid. To move in the air with a whistling sound.

person who is studying at university or other place of higher education. People studying at school.

Extremely large.

(Person) helping another, usually as a job. Person who helps another, usually as a job.