I've looked through the top 500 words and taken note below of some of the more interesting word pairs.
#7: "social security" is a top word pair globally and a top word pair for most countries. With an ageing world and low interest rates, I expect this word to rise in frequency.
#12/#13: "member state"/"member states" is a phrase used by the EU and in international treaties.
#18: "russian federation" is a popular word pair in the EU & Turkey (and of course, Russia).
#32: "motor vehicle" is a topic of interest everywhere and a defining feature of the 20th century.
#34: "higher education" is of just slightly less interest than cars & trucks (see above). #101 is "school district" (presumably referring to primary education).
#43: "real estate" is a major feature of legal systems worldwide.
#45: "coast guard" is of interest to only a few countries compared to real estate - only coastal countries have this as a popular word pair.
#46: "public health" is a major legislative word pair in almost every country. #49 is "health service", #54 is "national health" and #60 is "health insurance".
#55: "critical habitat" is a word pair that only occurs frequently in United States laws, primarily at the federal level. #82 is the more general "environmental protection" but it occurs in far more countries' laws.
#62: "vocational training" occurs frequently in EU country and Chinese/Vietnamese laws.
#76: "civil aviation" is a common word pair for most countries' laws.
#82: "small business" surprises me as a top word pair. There are more than 200,000 occurrences of this word pair in global laws (within the global-regulation.com database).
#87: "collective agreement" reflects the importance of unions in global laws.
#95: "personal data" occurs frequently in the laws of the EU countries. These laws are about privacy and protection of personal information.