一種【いっしゅ】
a kind, a sort, a variety, a species, of sorts, something of a, a sort of, sort of, somewhat
種類【しゅるい】
variety, kind, type, category, counter for kinds, species, etc.
人種【じんしゅ】
race (of people), type of person
種目【しゅもく】
item, event
品種【ひんしゅ】
type (of goods), sort, (taxonomical) form, breed, variety, kind, type, cultivar
種子【しゅし】
seed, pit
種々【しゅじゅ】
various, a variety of, all kinds of, many, diverse
種痘【しゅとう】
smallpox vaccination, inoculation against smallpox
菜種【なたね】
rapeseed, coleseed
甲種【こうしゅ】
A-grade, first-class