Bilingual individuals have also shown superiority in metalinguistic ability. This additional advantage seems closely tied to executive function. Metalinguistic awareness is the understanding of the separation between language's structure and its meaning. For example, being able to judge the grammaticality of a sentence regardless of whether it is sensical, or being able to separate the set of sounds comprising a word from the word's meaning. The ability to suppress distracting information, such as semantics, is an act of inhibition, meaning that it falls into executive function. This ability could also be exercised by being bilingual, given that a bilingual individual has to suppress their knowledge of another language system when operating in one of their languages.