A simple example is "ricin".
Some words that start with N and end with N are:nationneonneuronnewbornnoonnotationnotionnounnunnylon
Darshan and duramen are the seven letters word that start with D and end with N.
Words that start with 'n' are:nonoshnosynotWords that end with 'n' are:hononsonsoontonyon
Words that start with R and end with N are:raccoonrainradonranrationravenreasonrecessionreckonreflectionrefrainrefrigerationreinremainreunionribbonriboflavinripenroanrobinRomanrottenruffianruinrun
There are no countries that begin and end with the letter n.
nonagon
There are two countries that start with the letter "A" and end with the letter "N": Azerbaijan and Afghanistan.
Numbers.
Nitrogen's chemical symbol is N because N is the first letter in the word Nitrogen.
Words that start with an n and end with e include: nine noone Nile none normalize negate neonate
nazbazan in pakistan
narcissistnationalistnaughtnightnaturalistneatnegligentnewestneediestnaffestnosiestnoisiestnicestnestnetnewsprintnextnewtnitnonchalantnonconformistnovelistnoteletnonfatnonprofitnuggetnutnutrientnutritionistnepotistnoblest