Difference bw Monothong and diphthong

Difference bw Monothong and diphthong...
The main difference is that a monophthong is a phoneme that consists of only one (“mono” means one) vowel sound and a diphthong is a phoneme consisting of two (“di” means two) vowel sounds that are “connected” or “linked” to each other.
✍✍✍✍Monophthong comes from the Greek and means ‘one single sound’. Correspondingly diphthong means two sounds. It refers to the pronunciation of vowels. With the monophthong the vowel sound is single and ‘pure’, with diphthongs there is a vowel glide towards other vowel sounds. English is characterised by its large number of diphthongs in vowel pronunciation.
A diphthong is a sound made by combining two vowels, specifically when it starts as one vowel sound and goes to another, like the oy sound in oil. Diphthong comes from the Greek word diphthongos which means "having two sounds." ... So diphthongs are double vowel sounds in words like late, ride, or pout.
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In RP, there are 12 monophthongs and 8 diphthongs make up for total of 20 vowels. Not to mention the semi vowels, w and j which when combined with the vowels, create another set of umm..semi-vowel like sounds each of their own.
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