Do you know?

In this short list, i have compiled facts that may be unknown to us. Feel free to add yours.

1. "Ough" can be pronounced in eight different ways. The following sentences contain them all : rough ,dough ,plough,through,borough,coughing,thoughtfullyand hiccouging.
2. The English word does not have three common words ending in 'gry' Angry and Hungry are the only ones.
   3.Book keeper is the only word that has three consecutive double letters.
3. "Forty" is the only number which has its letters in alphabetical order . "one is the only number with its letters in reverse alphabetical order.
4. The two longest words with only one of the six vowels are defenselessness and respectlessness.
5. " Dreamt is the only English word that ends in the letters 'mt'.
6. "Asthma" and " Isthmi" are the only six letter words that begin and end with a vowel and have no other vowels between.
   8." Almost " is the longest commonly used word in English language with all the letters in alphabetical orders.
7. "Rhythms" is the longest English word without the normal vowels, a,e,I,o,u.
8. "THEREIN" is a seven letter word that contains 13 words spelt using consecutive letters : The , he ,her, er,here, I,there, ere,rein,re,in,therein and herein.
9. There is only one common word in English language that has five vowels in a row : QUEUEING.
10. Soupspoons is the longest word that consists entirely of letters from the second half of the alphabet.
11. The longest uncommon word whose letters are in alphabetical order is the eight letter Aegilops( a grass genus).
12. There are many words that feature all five vowels in alphabetical order the commonest being abstemious,adventitious,facetious.
13. The nine word sequence I,in,sin,sing,sting,string,staring, starting, startling can be formed successively by adding one letter to the previous word .
14. The “SOS” in Morse code does not, as is popularly believed, stand for “save our ship.” The letters S-O-S were chosen in 1910 as the distress call to replace the previously used C-Q-D because the pattern of three short, three long, three short letters was more easily distinguishable against background noise.CQ originated from the “sécu” in the French word “sécurité” (security) followed by D, which signaled distress.
15. Thomas Edison did not invent the lightbulb, or even the first incandescent one. British scientist Warren De La Rue made a lightbulb in 1840 using a platinum filament, and the first demonstration of incandescence (making a wire glow by running electricity through it) was in 1802 by British chemist Humphry Davy.
16. The swastika has been around for over 3,000 years and commonly symbolized goodness and luck, up until its use by the Nazis in Germany. The now reviled image was used by cultures all over the world, including early Christians, Jews, Hindus, Buddhists and even Native Americans.
17. The heart of a blue whale is the size of a small car.
18. Tigers have a stripped, each pattern is unique as a finger print.