sac and sack are homophones: they are pronounced identically and spelled differently, which is why they are so often swapped. sac means “an enclosed space”. sack means “a bag made of paper or plastic for holding customer's purchases”. sack is the more common of the two in everyday English.
/ˈsæk/
1.n.an enclosed space
“the trapped miners found a pocket of air”
2.n.a case or sheath especially a pollen sac or moss capsule
3.n.a member of the Algonquian people formerly living in Wisconsin in the Fox River valley and on the shores of Green Bay
/ˈsæk/
| sac | sack | |
|---|---|---|
| Pronunciation | /ˈsæk/ | /ˈsæk/ |
| Said | sak | sak |
| Syllables | 1 | 1 |
| Letters | 3 | 4 |
| Parts of speech | noun | noun, verb |
| Senses | 4 | 13 |
| How common | Familiar | Common |
| Synonyms | pouch, sack, pocket | poke, paper bag, carrier bag |
1.n.a bag made of paper or plastic for holding customer's purchases
2.n.an enclosed space
“the trapped miners found a pocket of air”
3.n.the quantity contained in a sack