eclipse

(noun) one celestial body obscures another. Synonyms: occultation.

(verb) be greater in significance than. Synonyms: overshadow, dominate. Example: "The tragedy overshadowed the couple's happiness."

(verb) cause an eclipse of (a celestial body) by intervention. Synonyms: occult. Examples: "The sun eclipses the moon today." "Planets and stars often are occulted by other celestial bodies."