What is the meaning of Backward_compatibility?

5-letter words containing

• 5-letter words containing l

• 5-letter words containing r

• 5-letter words containing i

• 5-letter words containing r

• 5-letter words containing i

5-letter words starting with

• 5-letter words starting with w

• 5-letter words starting with a

• 5-letter words starting with t

• 5-letter words starting with n

• 5-letter words starting with y

5-letter words in the middle

• 5-letter words in the middle e

• 5-letter words in the middle t

• 5-letter words in the middle n

• 5-letter words in the middle c

• 5-letter words in the middle m

5-letter words ending with

• 5-letter words ending with a

• 5-letter words ending with y

• 5-letter words ending with b

• 5-letter words ending with l

• 5-letter words ending with a

5-letter words excluding

• 5-letter words excluding d

• 5-letter words excluding r

• 5-letter words excluding a

• 5-letter words excluding e

• 5-letter words excluding o