A multilingual corpus is very similar to a parallel corpus. The two terms are often used interchangeably. A multilingual corpus contains texts in several languages which are all translations of the same text and are aligned in the same way as parallel corpora. Sketch Engine allows the user to select more than two aligned corpora and the search will display the translation into all the languages simultaneously. When only two languages are selected, a multilingual corpus behaves as a parallel corpus. The user can also decide to work with one language to use it as a monolingual corpus.
The terms parallel and multilingual are sometimes used interchangeably.
see also Parallel / Bilingual Concordance