Build a short, readable slug around the core keyword or topic, and do not try to match the full title. The priority order is keyword and brevity first, title last, because the slug should be a stable, clean identifier while the title is long and tends to change. A title is written to attract clicks and can be rewritten freely, but a URL is meant to last. Anchoring the slug to the lasting thing, the topic, beats anchoring it to the changeable thing, the title.
The reasoning starts with what a slug is for. It is a permanent address for the page, ideally one you never have to alter. Titles get tweaked for tone, length, freshness, and testing, sometimes many times over a page’s life. If your slug mirrored the title, every title edit would tempt a slug change, and slug changes are migrations that need redirects and cost you stability. Decoupling the slug from the title is what keeps the URL stable through all that editing.
That is why matching the full title is the wrong target even though it sounds tidy. Full titles are long, often contain filler words, and carry punctuation and qualifiers that bloat a slug. Cramming all that into the URL produces something unwieldy, harder to read, and tied to wording that will not survive. The slug only needs to capture the essence, which the core keyword or topic phrase does cleanly.
So the order of priorities is concrete. First, include the core keyword or topic so the URL is descriptive and relevant. Second, keep it short and readable by dropping filler words, stop words, and anything that does not aid understanding. The title comes last as a loose reference at most, a place to draw the topic from, not a string to copy. A slug like the topic phrase in three or four words almost always beats the whole title rendered as a URL.
When you set up your next page, write the slug as a short, keyword-anchored phrase that names the topic, trim the filler, and ignore the temptation to reproduce the title. You will have a clean, stable identifier that survives every future title change untouched.