Words ending with ion would include competition, perdition, rendition, nation, vacation, etc., all of which are nouns.
A suffix changes a word's part of speech. For example, the word 'happy' is an adjective. But when you add a suffix, which is an ending, it can change the part of speech. Happily is an adverb. Happiness is a noun.
The suffix -ism usually signals a noun.
Dreamily is an adverb because almost all of the time any word ending in -ly will be an adverb.
The part of speech that the word my is used as is an adjective.
It's a verb. The ending is the tell tale sign. It's the past tense of to contain.
punctuation
The word "ending" can function as a noun or an adjective, depending on the context.
A suffix changes a word's part of speech. For example, the word 'happy' is an adjective. But when you add a suffix, which is an ending, it can change the part of speech. Happily is an adverb. Happiness is a noun.
adjective (like everything ending in -OUS)
Adverb- most words ending in -ly are adverbs.
"Translation" is a noun, as is almost every word ending in -tion.
A noun (as are almost all English words ending in -tion)
The word unconscious, like other words ending in -ous, is an adjective.
The suffix -ism usually signals a noun.
"differentiation" is a noun. (Most words ending in "ion" are nouns. )
That would be an adjective
It would be a noun