What is the meaning of Mutually_exclusive?

5-letter words containing

• 5-letter words containing i

• 5-letter words containing b

• 5-letter words containing r

• 5-letter words containing r

• 5-letter words containing w

5-letter words starting with

• 5-letter words starting with u

• 5-letter words starting with a

• 5-letter words starting with n

• 5-letter words starting with r

• 5-letter words starting with k

5-letter words in the middle

• 5-letter words in the middle e

• 5-letter words in the middle D

• 5-letter words in the middle n

• 5-letter words in the middle a

• 5-letter words in the middle u

5-letter words ending with

• 5-letter words ending with a

• 5-letter words ending with s

• 5-letter words ending with e

• 5-letter words ending with z

• 5-letter words ending with e

5-letter words excluding

• 5-letter words excluding l

• 5-letter words excluding g

• 5-letter words excluding o

• 5-letter words excluding a

• 5-letter words excluding e