What is the meaning of Closed_set?

5-letter words containing

• 5-letter words containing r

• 5-letter words containing u

• 5-letter words containing p

• 5-letter words containing g

• 5-letter words containing c

5-letter words starting with

• 5-letter words starting with n

• 5-letter words starting with i

• 5-letter words starting with o

• 5-letter words starting with a

• 5-letter words starting with i

5-letter words in the middle

• 5-letter words in the middle o

• 5-letter words in the middle e

• 5-letter words in the middle e

• 5-letter words in the middle e

• 5-letter words in the middle n

5-letter words ending with

• 5-letter words ending with y

• 5-letter words ending with u

• 5-letter words ending with h

• 5-letter words ending with t

• 5-letter words ending with o

5-letter words excluding

• 5-letter words excluding a

• 5-letter words excluding o

• 5-letter words excluding n

• 5-letter words excluding a

• 5-letter words excluding l