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)
"Translation" is a noun, as is almost every word ending in -tion.
Adverb- most words ending in -ly are adverbs.
The suffix -ism usually signals a noun.
The word unconscious, like other words ending in -ous, is an adjective.
"differentiation" is a noun. (Most words ending in "ion" are nouns. )
A noun (as are almost all English words ending in -tion)
"Intrusion" is a noun. Words ending in "-ion" are virtually always nouns.
Dreamily is an adverb because almost all of the time any word ending in -ly will be an adverb.
This type of word is called a "participle". It was not usually considered a separate part of speech when I learned English but may be now.