Iguanid lizard and Lizard

Iguanid lizard noun - Lizards of the New World and Madagascar and some Pacific islands; typically having a long tail and bright throat patch in males.

Lizard and iguanid lizard are semantically related. In some cases you can use "Lizard" instead a noun phrase "Iguanid lizard".

Lizard noun - Relatively long-bodied reptile with usually two pairs of legs and a tapering tail.

Iguanid lizard and lizard are semantically related. Sometimes you can replace phrase "Iguanid lizard" with "Lizard", this terms are similar.