- aviation, air power - the aggregation of a country's military aircraft
--1 is a kind of collection, aggregation, accumulation, assemblage
- aviation - the operation of aircraft to provide transportation
--2 is a kind of industry
Derived form: verb aviate1 - aviation, airmanship - the art of operating aircraft
--3 is a kind of art, artistry, prowess
Derived form: verb aviate1 - air travel, aviation, air - travel via aircraft; "air travel involves too much waiting in airports"; "if you've time to spare go by air"
--4 is a kind of travel, traveling, travelling
--4 has particulars: flight, flying