'iĝ'—denotes to become, to be made to:

ruĝa = red, ruĝ'iĝ'i = to become red (to blush).
riĉa = rich, riĉ'iĝ'i = to become (or to grow) rich.

'il'—denotes an instrument or tool:

kombi = to comb, komb'il'o = a comb.
razi = to shave, raz'il'o = a razor.

'in'—denotes feminines:

frato = brother, frat'in'o = sister.
leono = lion, leon'in'o = lioness.

'ind'—denotes worthiness, to be "worthy of," "deserving of":

laÅ­di = to praise, laÅ­d'ind'a = praiseworthy, worthy of praise.
estimi = to esteem, estim'ind'a = estimable, worthy of esteem.

'ing'—denotes a holder (thing), that which is used for holding one object:

cigaro = a cigar, cigar'ing'o = a cigar holder.
kandelo = a candle, kandel'ing'o = a candlestick.

'ist'—denotes profession, trade, occupation, etc.:

drogo = a drug, drog'ist'o = druggist.
maro = the sea, mar'ist'o = a sailor.