It depends on the context in which you are using the word coinage, but here are a variety of related words:
coining, minting, metal money, mintage, specie, neologism, neology
kleenex
colgate
pampers
Asprin
The following words rhyme with coinage - forage storage linage package
cell phone, I-Pod
Some examples of transitional words used to contrast statements are:butoryetstillratherthoughinsteadhoweverotherwiseconverselyalternativelynonethelessneverthelessnotwithstanding
Examples of one syllable words are:aanareboarboreboxcancarcaredodogdoordougheatedgeeighteyefiveforfourgivegogoathihighheightinisitjayjokejoykeepkingkneelatelightlotmemoonmynonotnoteofoneownpoorpotpourquestquitquiteratrestrootroutesinsomesongthrowtotootoottwousevieviewwhatwhenwhoyearyetyouzipzonezoo
among
what are the characteristics of coined words
You will find some examples in the Wikipedia article on "Polish language".
kjkjk
hoe
Chairperson
tomato
aspirin , nylon , xerox , google , ecalator , heroin , factoid , frisbee , kleenex , muggle