1. What do the following words have in common?

RAMP
ELOPE
PAGE
HEM

2. What do the following words have in common?

DEAL
VALID
HINT
VALOR
RABBLE

HINTS:
1. The same word can precede two of the words and follow the other two.
2. It has to do with a change to the first letter of each word.

Answers:

1)
rampANT
ANTelope
pageANT
ANThem

2. The first letter of each word can be replaced by SQU to give new words:

SQUEAL
SQUALID
SQUINT
SQUALOR
SQUABBLE