Alternative spelling of side-by-side

(literally) Beside or alongside one another; close to one another and abreast. / (figuratively) In peace. / (figuratively) With a common purpose.

Moving horizontally, from one side to another and back.

Alternative spelling of side-to-side

A bounding straight edge of a two-dimensional shape. / A flat surface of a three-dimensional object; a face. / One half (left or right, top or bottom, front or back, etc.) of something or someone.

Being on the left or right, or toward the left or right; lateral. / Indirect; oblique; incidental.

(intransitive) To ally oneself, be in an alliance, usually with "with" or rarely "in with" / To lean on one side. / (transitive, obsolete) To be or stand at the side of; to be on the side toward.

(UK archaic, dialectal, Northern England, Scotland) Wide; large; long, pendulous, hanging low, trailing; far-reaching. / (Scotland) Far; distant.

(UK dialectal) Widely; wide; far.

To clear, tidy or sort.