What is the meaning of Binary_operation?

5-letter words containing

• 5-letter words containing y

• 5-letter words containing r

• 5-letter words containing p

• 5-letter words containing i

• 5-letter words containing e

5-letter words starting with

• 5-letter words starting with u

• 5-letter words starting with n

• 5-letter words starting with a

• 5-letter words starting with l

• 5-letter words starting with e

5-letter words in the middle

• 5-letter words in the middle h

• 5-letter words in the middle a

• 5-letter words in the middle e

• 5-letter words in the middle r

• 5-letter words in the middle r

5-letter words ending with

• 5-letter words ending with o

• 5-letter words ending with o

• 5-letter words ending with a

• 5-letter words ending with e

• 5-letter words ending with a

5-letter words excluding

• 5-letter words excluding r

• 5-letter words excluding e

• 5-letter words excluding a

• 5-letter words excluding u

• 5-letter words excluding l