As nouns the difference between yacht and null
is that
yacht is a slick and light ship for making pleasure trips or racing on water, having sails but often motor-powered. At times used as a residence offshore on a dock while
null is a non-existent or empty value or set of values.
As verbs the difference between yacht and null
is that
yacht is to sail, voyage, or race in a yacht while
null is to nullify; to annul.
As an adjective null is
having no validity, "null and void.