Sentence:  As a matter of fact the Enlightment culture was based on a philosophy inspired to an ethical laicism whose aim was to create a better society based on principles such as <WSD>solidarity</WSD>, equality of rights and duties, and full freedom. 
Meaning of the word marked with <WSD> tags:  A bond of unity or agreement between individuals, united around a common goal or against a common enemy, such as the unifying principle that defines the labor movement; mutual support within a group.