A person who studies word origins and meanings would most likely
be an etymologist. Hence the profession he is specializing from is called
etymology. Etymology in definition is called a scientific study of words, its
history, origin, morphology, structure and meaning. Words although, change
through the course of time and by which society uses a certain phrase, word or
mantra. Hence, etymology also studies that. It may also mean that word meanings
can change because of the ascribed and due to certain occasions.
The correct answers are
four, six, two.
Four colors are designated for text and background - those are the first four horizontal colors. Six color are used for accents and highlights, which can be seen over those first four colors. And finally, only two colors are used for hyperlinks, but they are not found in the image I've attached here.