Slantingways and Side by side

Side by side and slantingways are semantically related. In some cases you can use "Side by side" instead an adverb "Slantingways".

Side by side adjective - Nearest in space or position; immediately adjoining without intervening space.

Slantingways and side by side are semantically related. Sometimes you can use "Slantingways" instead an adverb phrase "Side by side".