This word is used also as a kind of equivalent to the -ism of English:
erid’tan alte: communism
erid’tan exkira: capitalism
erid’tan jaratu: racism (jaratu means ‘ethnic group’ or ‘tribe’)
erid’tan jasika: jasikaism, jasika-capitalism (This is a rejistanian ideology which means that the basic sectors must be covered by state-owned companies (the original meaning of jasika was ‘state-owned company’, by now it just means ‘company’), but that they must be restricted in respect of what services they can offer. Under erid’tan jasika, a state-owned post existed, but packages over a certain size and guaranteed intra-week delivery were only provided by private companies)
erid’tan kalesa: kalesic democracy (a democratic system in which the different districts replace their delegates at different times in the legislative period)
erid’tan linux: libertarianism (linux’tan means freedom and, yes, it is a reference to the operating system)
erid’tan menhes: philosophical materialism
erid’tan rekijo: rekijonalism (rekijonalists want to abolish all government structures over the level of the rekijo. If they existed in the USA, they would not only oppose the federal government but probably also the states as too big entities)
erid’tan shensa’ta: anarchy, positive term which anarchists use (no matter if -syndicalists or -capitalists) more detailed terms are created by further qualification: erid’tan shensa’ta linux and erid’tan shensa’ta alte.
erid’tan sosija: both socialism and more recently social democracy.
erid’tan valumu’ta: anarchism, breakdown of order (It is not really an ideology, but that does not hinder hypothetical rejistanis in the real world to use it for Somalia and similar places)
The -ist forms are created by replacing ‘tan by ‘he: erid’he jasika means jasikaist, erid’he alte means communist. Erid’he alone appears very seldom but has the meaning ‘someone who is commited to something’