No, no. Frock is an essential word.
Today I am going to wear a jersey dress to work with leggings.
On Saturday I wore a nice frock to a Christmas party.
Frock and dress mean very different things. Dress refers to the everyday garment. A frock is fancier, suggests effort, and is worn with higher than average heels and careful eye make-up.
It is like the the story that Eskimos have many words for snow and the Welsh have many words for valley. Here at S&B we need more than one word for dress if we are going to express ourselves clearly and efficiently.
Party frock. Lovely, sparkly, twirly party frock to be worn with red shoes. I do love a posh party frock. Tis the season!!!!