# Why opposite of electrophilic is not Protophilic

In organic chemistry , considering definitions of electrophilic and nucleophilic:

Electrophilic:having an affinity for electrons : being an electron acceptor.

nucleophilic : having an affinity for atomic neuclei (also can we say proton?) : being an electron donor.

So both being opposite to each, why dont we say nucleophilic as protophilic?

The name/ term is given as nucleophile because it would try to give away its electron pair to molecule which has less electron density possibly an electrophile. like in nucleophillic addition reactions the nucleophile attacks that part for example say in : carbonyl compounds on the carbon which has a less density of electron as the $\pi e^-$ land on oxygen . So was that a proton site or nucleus site or a site where electron density is less .