they are called, "Diphthongs".
Συνδέομαι (Sintheomai) "Th" here is pronounced like "th" in the words: those, these, that
Words with a soft "th" sound include "think" and "thank." Words with a hard "th" sound include "this" and "that."
Words that start with th-thethatthosetheseThebesthankthenthisthanthey
There are millions of words that contain the letters "th."
Some words that end with TH are:bathbirthbothboothbreathbrothclothdeathdearthdeptheartheightheleventhfaithfifthfilthforthfourthfrothgirthgrowthhathhealthhearthheathhundredthhyacinthkithlabyrinthlathlengthloathmammothmathmegalithmillionthmirthmonolithmonthmothmouthmythneathninthnorthoathpathpithplinthpsychopathquothsabbathseventhsheathsixthsleuthslothsmithsmoothsociopathsouthstealthstrengthswathteethtenthtoothtrothtruthtwentiethumpteenthvermouthwarmthwealthwidthwithworthwraithwrathwreathwrothxenolithyouthzenith
Hurt is one of those words that are sort of neither.
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Some words with silent "th" are: Asthma Christmas Thomas Honest
"Th-th-th-that's all folks!"
You use words call onomatopoeias. Those are words like bang, drip, crash, and boom.
Although we have words for natural hair we do not have words for those with un-natural colour.
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