What is the meaning of Non-trivial?

5-letter words containing

• 5-letter words containing n

• 5-letter words containing e

• 5-letter words containing w

• 5-letter words containing g

• 5-letter words containing m

5-letter words starting with

• 5-letter words starting with t

• 5-letter words starting with i

• 5-letter words starting with a

• 5-letter words starting with m

• 5-letter words starting with a

5-letter words in the middle

• 5-letter words in the middle l

• 5-letter words in the middle e

• 5-letter words in the middle t

• 5-letter words in the middle b

• 5-letter words in the middle k

5-letter words ending with

• 5-letter words ending with a

• 5-letter words ending with c

• 5-letter words ending with s

• 5-letter words ending with m

• 5-letter words ending with r

5-letter words excluding

• 5-letter words excluding n

• 5-letter words excluding l

• 5-letter words excluding l

• 5-letter words excluding l

• 5-letter words excluding e