"Language competence" refers to a person's ability to effectively understand, speak, read, and write a particular language. It means having the necessary knowledge and skills to communicate and use the language correctly. Full definition
«Our results show a clear statistical correlation between a high level of language competence and a good working memory in the students we tested,» she says. (sciencedaily.com)
This discrepancy is exemplified by our observation of significant lower levels of language competence in DHH children attending special education compared to DHH children attending mainstream schools. (journals.plos.org)
Beck, L., Kumschick, I.R., Eid, M. and Klann - Delius, G. (2012) Relationship between language competence and emotional competence in middle childhood. (scirp.org)