Liberty is Noun part of speech
Explanation:
Generally, noun is a part of speech that identifies a person, place or thing, or names. The noun liberty refers to political or civil freedom in the sense of being a free person, as defined by the absence of control or restraint. That liberty without equality means the domination of the most powerful.
Without nouns, you will be left with verbs, adjectives and adverbs. The lack of nouns will eradicate any subject or object from your sentence which is as good as communication essentially nothing.