The Helvetica font is a neutral font which does not convey any meaning of its own. However, the Helvetica Condensed Oblique does have a character of its own. This font consists of oblique letters of the Helvetica Condensed font, which is a tighter version of the original Helvetica.
It is mostly used when something in a text needs to be highlighted. The Helvetica Condensed Oblique can also be used in signage as a design element in itself. It is widely used in the advertising world for creating logos, specialized copy, etc. It can also be used as an ornamental element on an otherwise simple document like a party invitation.