Broadbill and Passerine

Broadbill noun - Small birds of the Old World tropics having bright plumage and short wide bills.

Passerine and broadbill are semantically related. In some cases you can use "Passerine" instead a noun "Broadbill".

Passerine noun - Perching birds mostly small and living near the ground with feet having 4 toes arranged to allow for gripping the perch; most are songbirds; hatchlings are helpless.

Broadbill and passerine are semantically related. Sometimes you can replace term "Broadbill" with "Passerine", this nouns are similar.