The English term "side-issue" matches the Dutch term "bijkomstigheid"

other english words that include "side" : dutch :
to, upon, towards, toward, beside, by, at aan
codicil, rider, appendix, accessorie, side-issue aanhangsel
considerable, sizable aanmerkelijk
eminent, sizable, considerably, considerable aanzienlijk
rump, backside, hind, hindmost achterste
abate, subside bedaren
alongside behalve
subside, abate bekoelen
consider beschouwen
alongside bezijden
rump, backside bibs
towards, by, at, beside, toward, to, bee bij
side, incidental bij-
side-issue bijwerk
sideshow, sideissue bijzaak
inside, until, within, into, a, per, in binnen
outside, villa, out buiten
at, beside, by dichtbij
aperture, rump, backside, opening gat
considerable, sizable geruim
acclivity, hillside, slope glooiing
hillside, acclivity, slope helling
hobby, sideline hobby
into, a, per, inside, within, in in
sideboard, closet, cupboard kast
backside, rump, buttocks kont
coast, edge, shore, seaside kust
seaside, coast kustlijn
dwelling, residence, phase kwartier
dwelling, residence logies
subside, abate luwen
side, incidental minder belangrijk
by, nearest, at, beside, next, alongside naast
at, beside, by nabij
explore, consider, investigate nagaan
dwelling, residence onderkomen
vice-president ondervoorzitter
countryside, country open veld
moreover, besides overigens
consider overwegen
a, in, into, inside, within, through, per per
countryside, country platteland
chairman, president praeses
president, chairman preses
president, chairman president
preside presideren
sidewalk stoep
into, a, inside, in, within, per, on te
sidewalk trottoir
besides, moreover trouwens
incidental, remote, side, distant, far, remotely ver
vice-president vice-president
sidewalk voetpad
preside voorzitten
president, chairman voorzitter
dwelling, residence woning
coast, seaside zeekant
seaside, coast zeekust
incidental, side zij-
sideshow, sideissue zijkant
side-way, by-way zijweg