母艦: a mother ship (specifically a water craft); short for 航空母艦 (kōkū bokan, “aircraft carrier”)

baby, newborn, infant / young child

凹: an indentation, a dip or divot, a hollow

久保田: a surname / 窪田: a surname

靫, 空穂: quiver (arrow container) / 鱓: moray eel

大久保: A surname.

浮き彫り: relief (carving); stark contrast

応募: application for employment; enlistment in a military; response to an advertisement / 王母: one's deceased grandmother

応募: to apply; to enlist; to respond

墓園: cemetery; graveyard