A scraper has only two main components: the handle and the blade.
Scraper handle
The handle is portion of the tool held by the user. Scraper handles can vary in length.
The main difference between floor and wall scrapers is the length of the handle.
Floor scrapers have longer handles, whilst wall scrapers have shorter ones.
Scraper blade
The blade is the part that removes material from a wall or floor. Scraper blades also come in different lengths.
The length of the blade needed depends upon the scope of the job in hand. Generally speaking, the more material you wish to remove, the longer the blade required.