Sui generis
In local government, a "sui generis" entity is one that does not fit with the general scheme of local governance of a country. For example in England, the City of London and the Isles of Scilly are the two "sui generis" localities, as their forms of local government are both (for historical or geographical reasons) very different from those of elsewhere in the country. 
In a press conference during which reporters were trying to analyse his political personality, Huey Long said, "...say that I am "sui generus", and let it go at that."
Surrogacy
Traditional surrogacy (also known as partial, genetic, natural or straight surrogacy) involves natural or artificial insemination of a surrogate. If the intended father's sperm is used in the insemination, then the resulting child is genetically related to the intended father and genetically related to the surrogate. If donor sperm is used, the resulting child is not genetically related to either intended parent but is genetically related to the surrogate.