目礼: a nod as a greeting / 黙礼: a silent bow

目礼: greet with a nod / 黙礼: give a silent bow

not necessary to; don't have to

Expresses gratitude or relief for something that happened in the past, a choice made, etc.

If only ~

It's good / okay to... / is fine

blades of grass and tree trunks / falcons

current, this, the matter in question / original, actual, base

long cylindrical things such as glasses of drink, pairs of jeans, pens or trains and buses / films or TV shows / home runs or goals / rounds of a match in boxing, wrestling or judo

Alternative form of 元