Some four syllable compound words are:
How Many words that have secretive syllable
One compound word containing the word 'stress' is overstress.
four
Four
Four
There are many words with two vowels and four consonants, such as: Grades, Stones, Walker, Sleeps, Banjos, Spinal, etc.
There are many examples of 3 syllable words. Some common 3 syllable words are:BananaAfricaFavoriteEnergy
Four.
Four.
Four
The component words "earth" and "quake" are each one syllable. Therefore the compound word "earthquake" is two syllables.
It has four syllables: tri·cer·a·tops.