Type has always been an important part of design for me. It creates moods, enhances or retards readability, and gives the communication an image.
Type Font is a set of all lowercase and capital characters, numbers and punctuation marks in one size and face.
Whereas, Type Family is a name given to two or more series of the types that are variants of one design. For example, Times New Roman, it is available in upper and lower case with roman, italic and bold variants. In simpler terms, type family is a collection of fonts that are similar in design but vary is size and boldness.
Classification of Fonts.
Serif fonts have a small stroke(serifs) on the end of each characters. The serifs usually help make the font more readable. Many novels, school and college books, reference guides use serif fonts. Example of serif fonts includes, Times New Roman, Baskerville, Palatino.
Open type fonts have an expanded character set. Meaning, this type of font can have many glyphs, as many as 65,000. Open type fonts are cross-platform, and can be used without modifications on Mac OS, Windows and some Unix systems.