1. Introducing a different topic; in point of fact
   - by the bye, incidentally, apropos

Encyclopedia: By the way

• short-winded
• short-winged
• shortage
• shortbread
• shortbread cookie
• shortcake
• shortcoming
• shortcut
• shorten
• shortened
• shortener
• shortening
• shortfall
• shortfin mako
• shortgrass
• shorthair
• shorthand
• shorthand typist
• shorthorn
• shortia
• Shortia galacifolia
• shortie
• shortish
• shortleaf pine
• shortleaf yellow pine