Recommended by Ark Baranek
"ENSURE" and "INSURE"
"Ensure" means to guarantee or make certain. "Insure" refers to obtaining insurance coverage. Ex.: Please ensure the door is locked. We need to insure our new car.
"ALTOGETHER" and "ALL TOGETHER"
"Altogether" means completely or in total. "All together" means everyone or everything in a group. Ex.: The project was altogether successful. We sang the song all together.