Adjectives and adverbs can be used to show what is different or similar about two or more things. There are three kinds of possible comparison forms: - equal/positive, - comparative, and - superlative. For example: big / bugger / biggest The comparative form is used when you compare two objects, and the superlative form is used when you compare three or more objects. HOWEVER... Some adjectives and adverbs have no Comparative and Superlative forms when used literally (word for word/not fugurative), often referred to as an "absolute' form. They cannot show a greater or lesser amount, so they can only have one form. Absolute examples: perfect, unique, dead, impossible, infinite, complete, absolute, chief, sufficient "Unique" means one of a kind. There is no other like it, so it is not possible to compare it to other forms. "Dead" is dead. There are no other forms of 'dead'. One is either alive or dead and one cannot be more dead or the most dead. "Perfect" cannot be improved upon. Nothing can be literally any better than perfect, so there is never a form of perfect such as 'more perfect or most perfect'.

Look up "ungradable" adjectives. Some adjectives have an extreme meaning, which means that you can't sensibly add adverbs to make them more or less extreme e.g. freezing = extremely cold. So it's "extremely freezing" is unnecessary and sounds strange. "Unique" literally means : so special, that there is only one of its type. Sometimes, unique is used simply as a synonym for "special", which is not ungradable, in which case you can say "very unique".

and again... another typo: NOT difintely BUT definitely... wow

Oh oh.... I made a typing mistake. I should have typed: big / bigger / biggest .... defintely NOT 'bugger' :)