The key difference between DVD and Blu-ray/HD-DVD is that DVD is a standard definition format in which disc information is encoded in 480i resolution, while Blu-ray/HD-DVD disc information can be encoded up to 1080p.
Definition of Understatement. Understatement is way of speaking which minimizes the significance of something. When using understatement, a speaker or writer often employs restraint in describing the situation at hand and uses an expression with less emphasis or strength than would be expected.
Litotes is defined as 'an ironical understatement in which affirmative is expressed by the negation of the opposite'. In this figure of speech, the usages are intentional, ironical and provide emphasis to the words. This is mainly done through double negatives.