papago

No -ag- suffix, and no papo inside it either. This is the false seam worth naming, because both halves look real. Esperanto genuinely has papo for a pope, and it genuinely has ago for a deed, off agi. Put them together and papago ought to mean something like a papal act. It does not, and it never has: papag- is one indivisible root, borrowed whole from a chain of trade languages, and the resemblance to papo is the sort of accident that a productive affix system trains you to over-read. Esperanto has no -ag- affix at all. When a word ends in -ago, check the dictionary before you take it apart.

What it does with the roots it can take. A young one is papagido, a female is papagino, and the verb the language actually uses about parrots is papagumi - to parrot, to repeat without understanding - which is the -um- suffix doing what it does best, standing in for a relationship too specific to have its own affix. Imiti is the neutral word for imitating; papagumi carries the sneer.

The one to keep apart is plumo. A parrot's feathers are plumoj, and so is a pen, because Esperanto took the French plume with both meanings attached. Context sorts it out every time, but a sentence about a parrot and a writing desk in the same breath will make you look twice.