What type of vocabulary is characterized by high frequency and is often learned through nonverbal communication?

Tier One Vocabulary is characterized by high frequency and is typically composed of the most basic and commonly used words in a language. These words are often learned through everyday interactions and nonverbal communication, such as gestures, expressions, and contextual cues. Because these words are prevalent in daily life and fundamental to communication, they are usually well understood by children by the time they reach school age. This vocabulary includes simple nouns, verbs, and adjectives that form the foundation of a speaker's language skills.

In contrast, Tier Two vocabulary includes more complex words that become more relevant in academic settings and are less frequently encountered in everyday conversation. Tier Three vocabulary comprises domain-specific or technical terms that are used in specific fields or subjects. Academic vocabulary overlaps with Tier Two but is not limited to high-frequency words used in general communication. Hence, Tier One Vocabulary accurately describes the type of vocabulary highlighted in the question.