Meanings

double heading (using two locomotives at the front of a train)

continuum mechanics

association analysis

genome-wide association study

Model United Nations

goldthread (Coptis japonica)

policy of alignment with the United Nations

federal police (US, Brazil, Australia, etc.)

conurbation

logotype

solidarity economy

wooden pestle

to do something impossible

to contact

button mashing (e.g. in video games)

Commonwealth of Australia

Federal Democratic Republic of Ethiopia

United Kingdom of Great Britain and Northern Ireland

Russian Federation

rise in stock price in response to rises of other stocks