Work that a person does to assist others. To maintain a piece of machinery so it runs well.

undergoing natural development by increasing in size and changing physically. Act of cultivating plants for food. To develop and become bigger or taller over time.

complex of runways and buildings for take-off, landing, and maintenance of civil aircraft. A place where passenger planes land and take off.

Used before you explain something simply, clearly.

easily perceived or understood.

place where road branches off from another. To shape metal with a spinning tool.

gladly received. used to greet someone in polite or friendly way. instance or manner of greeting someone. To greet someone who has just arrived.

traveller on public or private conveyance other than driver or crew. People who are traveling in a vehicle.

organization providing regular public service of air transport on one. Companies that fly passengers on its planes.

as alternative or substitute.

rise in size, amount, or degree of something. To make or become larger in size or amount.

To talk about seriously or in great detail.

estimate amount or level of.

Science or practice of flying aircraft.

form mental image of.