raw, unripe, green, crude

pen, reed pen

a term of abuse applied to a woman who has been cohabited with before the age of maturity, a sharp or cunning woman, a prude

fool, having weak understanding

entertaining vain desires, greedy

silence, taciturnity

folly, immaturity, lack of sense

foolishness, crude or wrong ideas, fancy

quiet, mute, silent, noiseless

immature, foolish

cellulase enzyme, cellulase enzymes are used to break down the cellulose of plant cell walls into simple sugars that can be fermented by microbes to fuel

pen-case

pen of Mani, the famous painter

silence, taciturnity, reticence

writer

a double-nibbed pen

of few words, taciturn

act of writing

paintbrush

nib, a bit of wood or horn for nibbing pens on, the pointed end part of a pen, which distributes the ink on the writing surface

experience is the best teacher

seal (the mouth of a vessel) with clay or dough, close, seal or fasten a letter, etc.

inexperienced, clumsy, naïve

raw material

inexperienced

ill-thoughts

lack of expertise, inexpertness, bungling

weak-minded

half-boiled soup