Jenny wren and Passeriform bird

Jenny wren noun - Any of several small active brown birds of the northern hemisphere with short upright tails; they feed on insects.

Passeriform bird and jenny wren are semantically related. In some cases you can use "Passeriform bird" instead a noun phrase "Jenny wren".

Passeriform bird 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.

Jenny wren and passeriform bird are semantically related. Sometimes you can replace phrase "Jenny wren" with "Passeriform bird", this phrases are similar.