What is the meaning of Equational_class?

5-letter words containing

• 5-letter words containing u

• 5-letter words containing d

• 5-letter words containing s

• 5-letter words containing m

• 5-letter words containing s

5-letter words starting with

• 5-letter words starting with c

• 5-letter words starting with e

• 5-letter words starting with e

• 5-letter words starting with o

• 5-letter words starting with t

5-letter words in the middle

• 5-letter words in the middle k

• 5-letter words in the middle z

• 5-letter words in the middle t

• 5-letter words in the middle a

• 5-letter words in the middle d

5-letter words ending with

• 5-letter words ending with t

• 5-letter words ending with u

• 5-letter words ending with g

• 5-letter words ending with s

• 5-letter words ending with e

5-letter words excluding

• 5-letter words excluding e

• 5-letter words excluding p

• 5-letter words excluding o

• 5-letter words excluding l

• 5-letter words excluding g