Didactic
bisections
Dual
A word meaning 'pelvis parts' is "pelvic".
The word you are looking for is "bipartite." This term describes something that is divided or composed of two parts.
i think motley
Yes, "grapefruit" is a compound word as it is made up of two separate words, "grape" and "fruit," that are combined to form a single word with a unique meaning.
A mark or short dash, thus [-], placed at the end of a line which terminates with a syllable of a word, the remainder of which is carried to the next line; or between the parts of many a compound word; as in fine-leaved, clear-headed. It is also sometimes used to separate the syllables of words., To connect with, or separate by, a hyphen, as two words or the parts of a word.
The three word parts in "intradermal" are "intra" meaning "within," "derm" meaning "skin," and "al" meaning "pertaining to."
Portable parts
Yes, "living room" is a compound word made up of two separate words that combine to form a new meaning.
Grouped, or a set.
Yes, "loudspeaker" is a compound word made up of two separate words "loud" and "speaker" that are combined to create a new word with a specific meaning.