H is for Hydronym

Hydronym, noun. From Greek hydor, “water,” + onoma, “name,” a body of water.

HUBRIS: excessive pride or self-confidence; arrogance. an excess of ambition, pride, etc, ultimately causing the transgressor's ruin.

Hegemony:  the social, cultural, ideological, or economic influence exerted by a dominant group 

Homogeneity and Heterogeneity are concepts relating to the uniformity in a substance. A material that is homogeneous is uniform in composition or character; one that is heterogeneous is distinctly nonuniform in one of these qualities<sup>.
Clam chowder, a heterogeneous material 

HYPHENATE:</sup>

i) a person working in more than one craft or occupation: a hyphenate in the film industry who has gained fame as a writer-director-producer.

ii) a person of mixed national origin or identity.

Hagiography 

Hagiography from the Greek (Hagio “holy” or “saint”) and graphēin (γράφειν, “to write”), refers to the biographies of saints and ecclesiastical leaders. The term hagiology, the study of hagiography, is also current in English, although less common.

Christian hagiographies focus on the lives, and notably the miracles of men and women canonized by the Roman Catholic church, the Anglican Communion, the Eastern Orthodox Church, the Oriental Orthodox churches, and the Church of the East. Other religions such as Buddhism, Islam and Sikhism also create and maintain hagiographical texts (such as the Sikh Janamsakhis) concerning saints, gurus and other individuals believed to be imbued with sacred power.