The Bowl in type terminology is basically letters that are closed up, Also the counter is basically the space in-between the closed up area of the letter and the hair line is the thin side of a type face as seen in the photograph.
BODY SIZE - The size of type point is found by measuring from the highest ascender line to the lowest descender line. These lines are measured to the highest and lowest point of the text, including the white space left above and below smaller letters.
A Descender is the lowest portion of letters such as 'g,' 'j,' 'p.' 'q,' and 'y' that extends below the baseline, or reading line of type and this portion of a lowercase letter that extends below the base line of the letter.