Putty blade: A flat-bladed tool made use of for applying or removing putty, fillers, or various other compounds on surface areas

https://www.slideserve.com/gwennokauh/discover-the-timeless-charm-of-sterling-jewelry-in-the-u-s-a

Putty knife: A flat-bladed tool utilized for using or eliminating putty, fillers, or various other compounds on surface areas.