Despite their obvious connection there is a difference between Presentation skills and public speaking skills. While the difference is subtle it is not uncommon to see someone with great public speaking skills struggle to deliver an effective PowerPoint presentation because they lack the “extras” that are presentation skills.
The major difference lies in the environment in which the skills are utilised. When you deliver a speech you are standing in front of your audience who will listen without interruption (unless you include laughter as an interruption), and you will not use any form of visual aid. Your public speaking skills will be on full show as you utilise vocal variety and gestures to enhance the delivery of your speech.
Contrast this with a typical presentation. Often a presentation will be delivered in a less formal surround, traditionally a meeting with colleagues or clients. You will have a PowerPoint presentation to support your delivery with key ideas or diagrams to emphasise your message. Your ability to stand a you deliver your presentation will be determined by the room setup, and it is not uncommon to deliver your presentation seated at the same table as your audience members.
In an effective presentation you will still utilise your public speaking skills, but you will need to adapt them to suit the situation. Coupled with the extra dynamic of visual aids and how you prepare them and how you deliver your presentation with them.
Public speaking skills are important, but in a corporate environment you need to extend them to include the “extras” that become Presentation Skills.