What does "stand for" mean in this situation?

"Art. 1 of the Universal Declaration on Human Rights (UDHR), adopted by the United Na- tions in 1948 refers to the main pillars of the human rights system, i.e. freedom, equality and solidarity. Freedoms such as the freedom of thought, conscience and religion as well as of opinion and expression are protected by hu- man rights. Similarly human rights guarantee equality, such as the equal protection against all forms of discrimination in the enjoyment of all human rights, including full equality of women and men. Solidarity stands for economic and social rights, like the right to social security, just remuneration, and an adequate standard of living, health and accessible education, which are an integral part of the human rights frame- work."

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I apologize for pasting such a long paragraph. I just want to give you the whole context of what I want to ask. My question is about the phrase "stands for" at the beginning of the last sentence "Solidarity stands for...". I can guess the meaning of this whole paragraph, but I don't understand why they use the phrase "stands for".

I looked up both words "stand" and "stand for" in the online Cambrigde dictionary
- stand: https://dictionary.cambridge.org/dictionary/english/stand
- stand for: https://dictionary.cambridge.org/dictionary/english/stand-for-sth?q=stand+for
but there seems to be no appropriate meaning or I missed some things?

Could you please help me to clarify the meaning of the "stand for" in this sentence? To which sort of meaning in the dictionary is the "stand for" corresponding?

Thank you for your help.