ReadonlyarticlesNews articles behind the trend. RSS backend only; empty from the RPC.
ReadonlygrowthPercentage increase over the window, e.g. 3950. RPC backend only.
ReadonlystartedWhen Google started reporting the trend. RSS backend only.
ReadonlytitleReadonlytrafficHuman-readable traffic: "+3,950%" from the RPC, "2000+" from RSS.
ReadonlyvolumeRelative search volume, on Google's own 0-100 style scale. RPC backend only.
A single trending search entry.
Both backends fill
titleandtraffic; the rest depends on which one answered, since Google exposes different fields on each. See TrendingResult.source.