We have learnt that spellings are just as important as parts of speech. The English language has many spelling conventions. For instance, while LOCATION and INVASION have a different set of four letters at their endings, their end pronunciation is similar. The peculiarity of English is that the pronunciation is not entirely dependent on the spellings. Though the letters have specific sounds, their pronunciations are different in certain combinations.
One of the common occurrences in English is the presence of silent letters. THISTLE is a word that has the second T silent. Similarly, KNICKKNACK has two out of the four Ks silent and BENIGN has G silent.