WordNet records no synonym and no antonym for battle of kerbala. It is the only member of its synset, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a battle in 680 in which the grandson of Mohammed and his followers were killed
“the Battle of Kerbala is the basis for the Ta'ziyehs that are performed annually”
Synonyms, antonyms and the broader and narrower relations for battle of kerbala come from Princeton University’s WordNet. Full sources and licences.