|Feed||Feeds provide routing data (e.g. stops and timetables) from one or more public transport agencies to the API. List of available feeds can be queried by using feeds query.|
|Agency||Some public transport provider, e.g. HSL.|
|Disruption (Alert)||A temporary change in public transport services.
For example, a stop out-of-use or a diversion on a route.
|Transportation Mode||A means of transport, for example: walking, cycling, driving a car, bus, train, subway, tram, ferry, airplane.|
|City bike||A shared-use bicycle that can be borrowed for a fee by anyone.|
|Route||A public transport service shown to customers under a single name, usually from point A to B and back. For example: trams 1 and 1A, buses 18 and 102T, or train A.
Commonly used synonym: line
|Pattern||A sequence of stops as used by a specific direction (i.e. inbound or outbound journey) and variant of a route.
For example, a variant of a route could be a tram entering service from the depot and joining at the middle of the route or a route might have a short term diversion without changing the route name (longer diversions are usually marked as different routes).
|Trip||A specific occurance of a pattern, usually identified by the route and exact departure time from the first stop.
For example: bus 102 leaving from Otaniemi on 2017-11-21 at 10:00, or more generally leaving from Otaniemi at 10:00 on specified days.
|Headsign||A description of a route usually written on the front of the vehicle.
For example: Helsinki (for just the destination) or Helsinki - Tampere (for both the origin and destination).
|Station||A location, which contains stops.
For example, a train station is a station and its platforms are stops.
|Stop||A public transport stop, from which passengers can board vehicles.|
|Cluster||A list of stops, grouped by name and proximity.|
|Stoptime||Stoptime is the time when a specific trip arrives to or departs from a specific stop.|
|Departure row||A special location type, which lists departures of a certain pattern from a stop. Departures rows are identified with pattern id, so querying departure rows will return departures only from one stop per pattern.|
|Itinerary||A combination of different transportation modes at certain times to reach from origin to destination.
For example, walking to a bus stop, taking a bus for two stops and then walking to the final destination.
Commonly used synonym: journey
|Leg||One part of an itinerary, e.g. walking to a bus stop or a bus ride between two stops.|
|Origin||A geographical point where an itinerary begins.|
|Destination||A geographical point where an itinerary ends.|