accompanying, adjacent, adjoining, agreeing, bordering, coequal, coetaneous, coeternal, coeval, coexistent, coexisting, coextensive, coincident, coincidental, coinciding, coinstantaneous, collateral, concomitant, concurrent, congruent, connecting, contemporaneous, contemporary, conterminous, contiguous, correspondent, corresponding, end to end, endways, endwise, equal, equivalent, face to face, immediate, isochronal, isochronous, joined, juxtaposed, juxtapositional, juxtapositive, neighbor, neighboring, next, simultaneous, synonymous, unison, unisonous