Coordinators and modification markers as categoryless functional elements

A coordinate construction is built by two basic levels of combination: a categoryless functional head is combined with a conjunct, and the result is combined with a categorizer, which is the other conjunct. The first combination is seen in all structures headed by a functional element, and the latter is seen in the categorization of a root. The same two levels of combination are also seen in a modification construction. A categoryless functional head is realized by a coordinator or a modification marker. The positions of the low and high conjunct are also those of a modifier and the modified element, respectively. Thus, neither a coordinate construction nor a modification construction has a construction-specific structural representation or functional head. This means that no coordinate construction is built by any construction-specific operation and there is no stipulated Adjunction operation. The categoryless functional head can also be found in compounds, which can also be categoryless, like single roots