proseminar

As a noun proseminar

is a seminar that is open to (and accessible to) upper level undergraduates; contrasts with a graduate seminar (for graduate students only), which assumes more background.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between lecture and proseminar

is that lecture is (a spoken lesson) A spoken lesson or exposition, usually delivered to a group while proseminar is a seminar that is open to (and accessible to) upper level undergraduates; contrasts with a graduate seminar (for graduate students only), which assumes more background.

As a verb lecture

is (to teach) To teach (somebody) by giving a speech on a given topic.

is likely misspelled.

has no English definition.

As a noun proseminar

is a seminar that is open to (and accessible to) upper level undergraduates; contrasts with a graduate seminar (for graduate students only), which assumes more background.

As nouns the difference between proseminary and proseminar

is that proseminary is a seminary that prepares pupils for a higher institution while proseminar is a seminar that is open to (and accessible to) upper level undergraduates; contrasts with a graduate seminar (for graduate students only), which assumes more background.

As nouns the difference between taxonomy and proseminar

is that taxonomy is the science or the technique used to make a classification while proseminar is a seminar that is open to (and accessible to) upper level undergraduates; contrasts with a graduate seminar (for graduate students only), which assumes more background.