Are both Nerium or Thuja could be a shrub?
Nerium Nerium oleander is a shrub or small tree in the dogbane family Apocynaceae, toxic in all its parts. It is the only species currently classified in the genus Nerium. It is most commonly known as nerium or oleander, from its superficial resemblance to the unrelated olive "Olea". It is so widely cultivated that no precise region of origin has been identified, though southwest Asia has been suggested. The ancient city of Volubilis in Morocco may have taken its name from the Berber name "oualilt" for the flower. Oleander is one of the most poisonous commonly grown garden plants.
Neofabricia Neofabricia is a genus of shrubs and small trees in the Myrtaceae family, first described as a genus in 1788, with the name "Fabricia". This, however, was an illegitimate homonym, in other words, someone had already used the name to refer to a very different plant. Therefore, this group in the Myrtaceae was renamed "Neofabricia". The entire genus is endemic to Queensland.