what does external decoration mean
No. The word auditor doesn't only mean an internal auditor but also an external auditor. An auditor could be an internal or an external auditor. In most cases simply an auditor means an external auditor.
external appearance of a clearly defined area, as distinguished from color or material; configuration:
external goal means the outside of something
externally
External
The external antenna broke off the car.
External Input, as in a mp3 player.
A half-conscious state characterized by an absence of response to external stimuli, typically as induced by hypnosis or entered by a medium.
External is an adjective and conflict is a noun. The entire phrase external conflict is reffered to as a noun.
From outside
Depends what you mean by "port", but that word is more often used for external connections that internal ones, so in that case ports are used for external hard drives but not internal ones.