All black fonts are extremely bold and so is this font. The Helvetica Neue Condensed font is a narrower version of the Helvetica Neue, although it definitely adheres to the basic design characteristics of the Neue font. It can be used in signage especially where space needs to be conserved.
At the same time, it can also be used to make a bold statement about your thoughts and feeling if you use it in personal communication. The Helvetica Neue Condensed Black is popularly used in the field of advertising and by graphic designers all over the world, whenever they need to put something across with emphasis.
You may also like: Free Helvetica Font: Helvetica Neue Condensed Bold