| Word | Morphemes | Stem | Root |
|---|---|---|---|
| desks | desk, -s | desk | desk |
| payments | pay, -ment, -s | payment | pay |
| bottled | bottle, ∅ * , -ed | bottle | bottle |
| tree | tree | tree | tree |
| spiteful | spite, ful | spiteful | spite |
| realizes | real, -ize, -s | realize | real |
| optionality | opt, -tion, -al, -ity | optionality | opt |
| * | Some linguists would say there is an empty (∅) morpheme needed to change bottle from a Noun to a Verb, before it can take the -ed ending which goes on Verbs. |