Here's a breakdown:
* Prosody: The study of rhythm, meter, and sound in poetry.
* Foot: The basic unit of rhythm in a line of poetry.
* Syllable: A unit of pronunciation consisting of a single vowel sound, with or without surrounding consonants.
* Long Syllable: A syllable that receives emphasis or stress. In many poetic forms, a long syllable can be marked by a stressed vowel, or it can be a heavy syllable with a long vowel sound.
Spondee: A foot in prosody consisting of two long syllables. Examples include:
* "high-WAY"
* "SEA-shore"
* "deep-LY"
Note: Spondees are often used in poetry to create a sense of weight, solemnity, or emphasis. They can also be used to create a contrast with other feet, such as iambs (unstressed, stressed).