Content provided by the US Census bureau for the years 2010, 2011, 2012, 2013, 20140and 2015.
Synteny. The presence of two or more genetic loci on the same chromosome. Extensions of this original definition refer to the similarity in content and organization between chromosomes, of different species for example.
Syntactically, a complex element such as a sentence is built up out of simple elements, words and morphemes, according to the formation rules of the language. Semantically, the meaning of the whole sentence is determined by the meanings of the simple elements together with the syntactical structure of the sentence.