Final answer:
Low-frequency words that pertain to a specific area of study would be considered Tier 3.
Step-by-step explanation:
Low-frequency words that pertain to a specific area of study would be considered Tier 3.
Tier 3 words are domain-specific words that are not commonly used in everyday language but are important for understanding a particular subject or field of study. For example, in the field of English, words like metaphor, alliteration, or sonnet would be considered Tier 3 words.