side by side
• (of two or more people or things) close together and facing the same way.
• "on we jogged, side by side, for a mile"
Similar:
alongside (each other),
beside each other,
abreast,
level,
shoulder to shoulder,
cheek by jowl,
together,
close together,
from side to side
• alternately left and right from a central point.
• "I shook my head frantically from side to side"
• across the entire width; right across.
• "the fleet stretched four miles from side to side"
