Answer:

common

Answer	Crossword Clue
COMMON	Undistinguished
COMMON	Boston ..
COMMON	Like some interests

COMMON	Ordinary
COMMON	Provincial
COMMON	Dime-a-dozen
COMMON	Run-of-the-mill
COMMON	Seen all the time
COMMON	Familiar.
COMMON	Boston ..., first public park in U. S.
COMMON	Paine's sense

COMMON	Plain
COMMON	Boston...
COMMON	Like the name Nguyen in Vietnam
COMMON	Garden-variety
COMMON	Seen a lot