What's the difference between further and only?

Further

Definition:

• (adv.) To a greater distance; in addition; moreover. See Farther.
• (superl.) More remote; at a greater distance; more in advance; farther; as, the further end of the field. See Farther.
• (superl.) Beyond; additional; as, a further reason for this opinion; nothing further to suggest.
• (adv.) To help forward; to promote; to advance; to forward; to help or assist.

Example Sentences:

Only

Definition:

• (a.) One alone; single; as, the only man present; his only occupation.
• (a.) Alone in its class; by itself; not associated with others of the same class or kind; as, an only child.
• (a.) Hence, figuratively: Alone, by reason of superiority; preeminent; chief.
• (a.) In one manner or degree; for one purpose alone; simply; merely; barely.
• (a.) So and no otherwise; no other than; exclusively; solely; wholly.
• (a.) Singly; without more; as, only-begotten.
• (a.) Above all others; particularly.
• (conj.) Save or except (that); -- an adversative used elliptically with or without that, and properly introducing a single fact or consideration.

Example Sentences: