tick vs look into

tick is a noun but look into is not a noun.

Word	Noun	Adjective	Verb	Adverb
tick	Yes	No	Yes	No
look into	No	No	Yes	No

tick (noun)	look into (noun)
any of two families of small parasitic arachnids with barbed proboscis; feed on blood of warm-blooded animals
a light mattress
a mark indicating that something has been noted or completed etc.
a metallic tapping sound

tick (verb)	look into (verb)
put a check mark on or near or next to	examine so as to determine accuracy, quality, or condition
sew	investigate scientifically
make a clicking or ticking sound
make a sound like a clock or a timer