1. A method comprising: receiving a plurality of attributes associated with a concept type of a query conceptual graph stored in a computer-readable medium; receiving a potentially conceptually similar term from an onomasticon corresponding to the concept type; and validating, by an apparatus, the potentially conceptually similar term according to the plurality of attributes, the validating comprising: determining, from the received attributes, a percentage of the received attributes that map to the potentially conceptually similar term; determining that the potentially conceptually similar term is conceptually similar to the concept type if the determined percentage is equal to or greater than a predetermined percentage; and determining that the potentially conceptually similar term is not conceptually similar to the concept type if the determined percentage is less than the predetermined percentage.