Vivaham / Marriage means leading - taking a bride to  gruhasthaasramam.  It is a very important as it marks the beginning of a new life for a couple and calls for a life long mutual commitment to achieve desired goals.  According to the Veda marriage is a union between a masculine and feminine entity with commitments to pursue Dharma, Artha (possessions), Kama (physical and other desires) and Moksha (the liberation) in unison.