fire

Examples-

pyrgeometer - device which measures earth’s/Earth’s heat
pyrology - the study of fire

(adj) = made of

~ part of speech change:   noun or adjective +

en  =  adjective                                   

 woolen - made of wool (noun wool + en = adjective

made of wool)                                                    

wooden - made of wood (noun wood + en = adjective

made of wood)                                

(v.) = to make

~ part of speech change:   adjective + en  =   verb

moisten - to make moist ( adjective moist + en = verb to

make moist)                                                              

soften - to make soft (adjective soft + en = verb to make

soft)

color or using color

Examples-

~spelling chromato = chromat + vowel

chromatology - the study of colors

chromotherapy - treatment using colors

woman

Examples-

Note:  also gyno / gynae / gynaeco

gynecologist – an expert in the study of women
polygynous - having to do with many women

rock

Examples-

~spelling- litho  =   lith + vowel

polylithic - having to do with many rocks
lithology - the study of rocks           

having to do with

Examples-

Notice:  ical  =  ic + al

gastral - having to do with the stomach
anthropoidal - having to do with resembling early man