olemus
(a) liik ideogramme, ta tähendust väljendab
skemaatiline sarnasus tähistatava objekti või nähtusega
(b) = ideogramm
(c) = ikoon
(d) = hieroglüüf

Cambridge Dictionary:
a picture or symbol that represents a word, phrase, or idea

näiteid
https://duckduckgo.com/?q=pictogram&t=h_&iax=images&ia=images

https://duckduckgo.com/?q=traffic+sign+pictogram&t=h_&iar=images&iax=images&ia=images

ülevaateid
https://juliannakunstler.com/vislit_symbols.html

http://superfinedesign.net/kcc/files/ART127_PictogramsIdeograms.pdf

https://en.wikipedia.org/wiki/Pictogram

https://en.wikipedia.org/wiki/GHS_hazard_pictograms

https://media.beckmancoulter.com/-/media/diagnostics/services-and-support/docs/glb_bci_155773-ghs-pictogram-reference-table.pdf

http://www.cognition-usages.org/chart/dmdocuments/inrets22.pdf

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3383821/

https://www.mdpi.com/2220-9964/9/3/142/pdf