Spoken English is another matter altogether. People from Earth are not yet intelligent enough to realise that you need a book that allows you to find the spelling of a spoken word. But don't get too confident, because there are traps. First there are words which sound the same, are written the same, but have different meanings. Some other ones could get an innocent hitchhiker in big trouble.
Some words sound the same but are spelled differently.
The following are dangerous if confused. In addition, many English words sound similar although not the same. They could easy confuse a hitchhiker. In particular, consonants 'k' and 'g' sound similar, so do 't' and 'd', and 'p' and 'b', and j' and 'ch'. Some short vowels in English 'i', 'e', 'a', 'o', 'u' can sound very similar at times.