The absolute magnitude M, of a star or astronomical object is defined as the apparent magnitude it would have as seen from a distance of 10 parsecs (about 32.6 light years). The absolute magnitude of the Sun is 4.83 in the V band (yellow) and 5.48 in the B band (blue).
For example: The word vocabulary is derived from the Latin root wordâvocâ, which means 'word' or 'name'. Other words like advocacy, vocal and vociferous are also derived from the same root word. Hence, if you can recognize some root words, you will get a fair idea of many derived words.
Because I'm quite sure that the average vocabulary of an English speaker is 5000 words - that is not even the number of words needed for the JLPT2 let alone the JLPT 1 which is 10,000 words. Update: By how many words I am asking more along the lines of how many in common use...