1. What do the following words have in common?

DANE

DONE

NEST

CRANE

NERO

2. What do these words have in common?

SOLVE

ROAD

RIDGE

SENT

HINTS:

1. The same letter can be replaced in each word.

2. The same two letters, added in the same place, will create new words.

Answers:

1. Each N can be replaced by a Z to give new words.

2. The letters AB can precede each word.