Interpretation is speaking one language to restate the words of another language.
Localizing information is not an exact exchange of words from one language to another, but it goes further to customize the communication to the culture.
Limited English Proficiency (LEP)
A person with Limited English Proficiency may have difficulty speaking or reading English to some degree. Title VI of the 1964 Civil Rights Act addresses a prohibition against National Origin Discrimination affecting Limited English Proficient individuals.
Transcribing is the service of changing spoken words into written language.
Translation is where one language is precisely written as a different language so others can understand it.