Affixes- Most commonly a suffix or prefix attached to a base word, stem, or root. (Words Their Way, 6th Ed.)

Knowing and understanding affixes is important to understanding word meaning. You can add to or take away affixes to change the meaning of words.
Morphemic Analysis- The process of analyzing or breaking down a word in terms of its meaning units or morphemes. (Words Their Way, 6th Ed.)

Example: In-struct-or
Morphemic analysis is important for understanding the meaning of words.
Inflectional Endings- Suffixes that change the verb tense or number of a word. (Words Their Way, 6th Ed.)

Tense Changes- Walk, Walks, Walked, Walking
Number (singular, plural)- Dog, Dogs or Box, Boxes
These types of endings are important to teach so students understand so that can read and write in the correct tense, as well as understanding singular and plural words.
Domain Specific Academic Vocabulary- Vocabulary found in content area, specialized, disciplinary texts. (Words Their Way, 6th Ed.)

Examples: Math vocabulary- equilateral, coordinate plane, addend, factor
This vocabulary is specific to certain subjects. It is important for students to learn and understand domain specific vocabulary in order to better understand each subject area they are taught in school.
General Academic Vocabulary- Vocabulary used across content areas and disciplines. (Words Their Way, 6th Ed.)

General Academic Vocabulary is important because it is used year after year in school across all subject areas. As students grow and learn, their vocabulary knowledge should grow with them.
Syllable Juncture- The transition from one syllable to the next. Sometimes the transition involves a spelling change such as consonant doubling or dropping the final -e before adding -ing. (Words Their Way, 6th Ed.)

This is an important spelling "rule" for students to know so they can correctly segment words and add inflectional endings.
Accented Syllables- The syllable in a word that receives more emphasis when spoken and usually has a clearly pronounced vowel sound. (Words Their Way, 6th Ed.)

Accented syllables are important to pronouncing words when speaking.
Unaccented Final Syllables- The syllable in a word that gets little emphasis and may have an indistinct vowel sound, such as the first syllable in about, the second syllable in definition, or the final syllables in doctor or table. (Words Their Way, 6th Ed.)
Like accented syllables, unaccented syllables are important for pronouncing words when speaking.