side by side

adjectives

nearest in space or position; immediately adjoining without intervening space
"had adjacent rooms"; "in the next room"; "the person sitting next to me"; "our rooms were side by side"
closely related or associated
"a city in which communism and democracy had to live side by side"
is similar to
being connected either logically or causally or by shared characteristics
"painting and the related arts"; "school-related activities"; "related to micelle formation is the...ability of detergent actives to congregate at oil-water interfaces"