Over-dye is a fabric dye process on denim fabrics. Most frequently used on indigo or black denim fabric, this is over-dyed black and when coloured jeans are in trends.
Overall is a one-piece garment style usually made from denim or canvas fabric; an overall is a pant, bib top and suspenders over the shoulders — initially, a workwear product.
Overprint is a term used on printing of one impression over another. A technique used heavily by punk movements in the mid-seventies was over-print of regular t-shirts.