[wrwkwewv] Elements with similar names

manganese magnesium

ytterbium yttrium

erbium terbium ytterbium

copper copernicium

thallium thulium thorium

zinc zirconium

lutetium ruthenium

boron bohrium

titanium tin

rhodium rhenium

niobium nihonium

niobium nobelium

iron fermium

potassium calcium gallium

sodium nitrogen

platinum silver

lead molybdenum

krypton lanthanum

barium tungsten

francium gallium lutetium

ruthenium moscovium

germanium rhenium

chromium iridium

bromine osmium

radon radium actinium

caesium indium

zirconium gold

antimony tin

neptunium nihonium

actinium acetyl/acetate (latter not an element)

americium ammonium (latter not an element)

indium iminium (latter not an element)

(The reasons for the similarity between some of these might be so obscure as to be considered puzzles.)