अपना —    आप —    अप —

अपना  a) one's own, pertaining to oneself

अपने-अपने  respective

अपनापन  m) affinity, relationship, kinship (familia, parentesco), intimacy, friendship, family relations, kinsfolk (parentesco); self-respect

पन/पना  suffix added to common nouns and adjectives to form abstract nouns 

आप ही/अपने आप  spontaneously, automatically; yourself, itself; of one's own accord (voluntariamente); by oneself

आप  pro) (deferential) you (second person); pronoun used to express respect, as distinct from तुम, तू

अप  Sanskrit prefix denoting—away, off, base, down, deterioration or inferiority; as an allomorph of आप, it also denotes 'self'