The words below have something in common, which is hinted at in the title to this puzzle (given as a hint).

TEN
HEM
PAGE
GALL
ELOPE
SERGE

HINT: Title of the puzzle:
What a Nice Picnic!

Answers:

Each word can be either preceded or followed by ANT to make a new word:

TENANT
ANTHEM
PAGEANT
GALLANT
ANTELOPE
SERGEANT

(No ANTS makes for a nice picnic.)

Credit: NY Times Crossword
Richard Silvestri