parallelling
par-al-lel-ling
verb
Being similar or corresponding to something else; occurring simultaneously or in a similar way.
"His career path was parallelling his father's."
Thesaurus
Synonyms: parallel, synchronic, synchronal, synchronous, line of latitude, latitude, parallel of latitude, duplicate, twin, collimate, nonconvergent, collateral
Antonyms: oblique, perpendicular