malapropism /malˈə-pro-pi-zm/

1. The misapplication of words without mispronunciation, from Mrs Malaprop in Sheridan's play, The Rivals, who uses words malapropos
2. A word so used

• spa bath
• space
• space age
• space-age
• space ages
• space band
• space bands
• space bar
• space bars
• space blanket
• space blankets
• spaceborne
• space cadet
• stapled
• staple gun
• staple guns
• stapler
• staplers
• staples
• staple town
• staple towns
• stapling
• stapling machine
• stapling machines
• stapped