doublespeak

Euphemism is generally a harmless word, name, or phrase that replaces an offensive or
suggestive one. In this image, it shows how someones failure is looked at as a lesson learned instead of a failure.
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Jargon is terminology which is especially defined in relationship to a specific activity, profession, group, or event. In this image we see how they are using different terms along with the simplified version of what they said.
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Gobbledygook is jargon, or especially convoluted language, that results in it being excessively hard to understand or even incomprehensible. In this image, we see the similarity between gobbledygook and jargon. He is using language, or words, that make it hard for someone who isn't used to hearing them, difficult to understand. Even a baby talking jibberish could be considered gobbledygook.
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Inflated language is puffed-up, important-sounding words used to give commonplace things and events an elevated, glowing appearance. In the image, we see how a job ad uses inflated language as a way to try and catch your eye by stating they have the best job in the world to offer if you apply.