As nouns the difference between couturier and dressmaker
is that couturier is a person who designs haute couture (high fashion) while dressmaker is a person who makes dresses.
couturier
English
Noun
(
en noun)
A person who designs haute couture (high fashion).
A company that is owned by, or employs such a person; a fashion house.
dressmaker
English
Noun
(
en noun)
A person who makes dresses.
Usage notes
* This term may apply to a person of either gender, but is usually expected to be female.
Coordinate terms
* seamstress
* tailor