Font (serif & sans-serif), :In typography, a sans-serif, sans serif, gothic, san serif or simply sans typeface is one that does not have the small projecting features called "serifs" at the end of strokes. 



                               

Margin:Borrowed money that is used to purchase securities. This practice is referred to as "buying on margin.
        

Guide (illustrator guides):

Bleed:is a printing term that refers to printing that goes beyond the edge of the sheet before trimming

 



CMYK,:The CMYK color model (process color, four color) is a subtractive color model, used in color printing, and is also used to describe the printing process itself.

Image resolution,:Image resolution can be measured in various ways. Basically, resolution quantifies how close lines can be to each other and still be visibly resolved.

Proof copy, :made from trial impressions made from composed type, or print-outs (from a laser printer, etc) for the correction of errors  

Artboard,:Artboards are a unique and powerful feature of Illustrator. The artboard works just like a piece of paper would on a physical desk. 

Registration mark:The registered trademark symbol, designated by ® (the circled capital letter R), is a symbol that provides notice that the preceding word or symbol is a trademark or service mark that has been registered with a national trademark office.