Spreading words with words

Samizdat

/ˈsämēzdat/: 

the clandestine copying and distribution of literature banned by the state, especially formerly in the communist countries of eastern Europe.  

from Oxford Languages and Google

Quix·ot·ic

/kwikˈsädik/:

exceedingly idealistic; unrealistic and impractical.

from Oxford Languages and Google

Antiquated

/ˈan(t)əˌkwādəd/:

old-fashioned or outdated.

from Oxford Languages and Google

Quagmire

/ˈkwaɡˌmī(ə)r/:

soft wet/muddy/boggy area of land that gives way underfoot

from Oxford Languages and Google

Metric tensor

the fundamental object of study

from: https://en.wikipedia.org/wiki/Metric_tensor_(general_relativity)