Final answer:
Greta is focusing on teaching the lexicon and grammar of the Calibran language, which encompass the vocabulary and the set of rules for combining words into sentences, respectively.
Step-by-step explanation:
Greta is teaching her students the meaning of words and sentences in the language used in the country of Calibra. In this scenario, Greta is most likely referring to the lexicon and grammar of the Calibran language.
The terms lexicon and grammar are what Greta is focusing on when teaching the meaning of words and sentences in the Calibran language.
Language learning encompasses various aspects, including the vocabulary and the set of rules that dictate how words are used to convey meaning. The lexicon of a language refers to its entire set of vocabulary. This is what Greta is teaching when she focuses on the meaning of words in Calibran. On the other hand, grammar refers to the rules that guide how words are combined to form sentences. These rules are what make it possible to create sentences that convey specific meanings and are understood by others who speak the same language.
For example, in English, the grammar rule that verbs in the past tense typically end with "-ed" is a part of English grammar, just as there would be similar or different rules in the Calibran language's grammar. Contextual usage of language, such as persuasion emphasized by ancient Greeks through rhetoric, and cultural aspects like facial expressions and gestures also play a role in effective communication. However, lexicon and grammar are the foundational components of any language, and that is what Greta is likely teaching to her students.