Common Core Standards
Grade 2
Language L.2.5.B
Distinguish shades of meaning among closely related verbs (e.g., toss, throw, hurl) and closely related adjectives (e.g., thin, slender, skinny, scrawny).
Second graders have been working on this substandard since kindergarten. Don't sweat it too much; it'll take more exposure to get them really acquainted with the nuanced meanings of the words in their catalog.