Almost impossible to assign a distinct style or use to chairs made as a single !! Nursing chairs were more traditionally rocking chairs with a slightly lower profile !! But since the makers often varied seat heights slightly from mfr to mfr any one could be considered a nursing chair if it fit the profile !! Same with vanity chairs !! They were made as a single chair and were varied as well in look and size !! So basically it fits the profile for the peacock chair so that would be its style,, as to its use,,I would vote on vanity chair !! Looks very uncomfortable to be a nursing chair with that back !! Imagine holding a baby and having to sit in that !! I would want to relax a bit if it were me !!