word clouds in schema.org

just a note for future review: when convenient,

kindly point out what mechanism exists if any

 to map semantic proximity of different terms in schema.org vocabulary
(is there a way to say that a word has some shared meaning
with other words, although they are not exact synonyms

example is emergency /crisis/ disaster maagemet
are different flavours of similar type of occurrences so some
properties/associated processes may be shared but not all

thanks

PDM